Physics 4-26
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
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| The charge of an electron is | show 🗑
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| Atomic Nuclei of almost all elements consist of | show 🗑
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| show | repel each other
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| show | attract each other
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| The fundamental force underlying all chemical reactions is | show 🗑
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| Electrical forces between charges are strongest when the charges are | show 🗑
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| Coulombs law says that the force between any two charges depends | show 🗑
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| Two charges are separated by a certain distance. If the magnitude of each charge is doubled, the force on each charge is | show 🗑
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| When the distance between two charges is halved, the electrical force between the charges | show 🗑
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| show | is zero
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| A positive ion has | show 🗑
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| If you comb our hair and the comb becomes positively charged, your hair becomes | show 🗑
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| In a good insulator, the electrons are usually | show 🗑
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| Objects can be charged by | show 🗑
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| Charge carriers in metal are electrons rather the protons, because electrons are | show 🗑
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| To be safe in the unlikely case of a lighting strike, it is best to be inside a building framed with | show 🗑
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| show | positively charged
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| An electroscope is charged positively, as shown by foil leaves that stand apart. As a negatively charged rod is brought close to the electroscope, the leaves | show 🗑
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| show | Both A and B
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| When a charged cloud passes overhead, the ground below is charged by | show 🗑
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| Bring a charged object near a conductor and then momentarily touch the conductor. This demonstrates charge by | show 🗑
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| show | induced opposite charged in the wall are closer than the other wall charges
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| Two charged particles held close to each other are released, as they move, the force on each particle increases. therefore, the particles have | show 🗑
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| show | charges that cannot be determined
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| show | Increases
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| show | The same signs
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| The SI unit of charge is the | show 🗑
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| show | the same
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| The electrostatic force between two charges located 8 meters apart is 0.10 N. What will the force between these charges when they are located 2 meters apart? | show 🗑
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| A 2-C charge and a 4-C charge attract each other with a 10 N of force. How much will a 2-C charge and a 12-C charge attract each other when placed the same distance apart? | show 🗑
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| Two charges separated a distance of 1.0 meter exert a 10-N force on each other. If the charges are pushed to a separation of 1/3 meter, the force on each will be | show 🗑
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| show | 5 N
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| show | 8 N
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| show | Both A and B
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| In solid conductors, electric current is the flow of | show 🗑
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| show | by interacting with an established electric field
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| show | Unit of current
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| An example of a voltage source is | show 🗑
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| Electrical resistance in a wire depends on the wires | show 🗑
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| show | All of the above
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| COMPARED TO THIN WIRES, ELECTRICAL RESISTANCE IN THICK WIRES IS | show 🗑
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| For most conductors, as their temperature increases, their resistance | show 🗑
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| electrical resistance is measured in | show 🗑
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| A woman experiences an electrical shock. The electrons making the shock come from | show 🗑
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| show | the running shoes
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| The primary reason a bird can perch harmlessly on a bare high voltage wires is that | show 🗑
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| show | alternating he direction of voltage of the power source.
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| The frequency of AC current in North America is | show 🗑
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| show | DC
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| Where do the electrons come from that produce heat and light in a light bulb? | show 🗑
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| show | Zero
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| show | electron kinetic energy is changed into heat and other forms of energy
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| If you plug an electric toaster rated at 110 V into a 220 V outlet, current in the toaster will be | show 🗑
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| The resistance of your dry skin is usually around | show 🗑
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| Electric power is defined as | show 🗑
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| show | greater
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| show | 120 V
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| When an 8 V battery is connected to a resistor, 2 A of current flows in the resistor. What is the resistors value? | show 🗑
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| The current through a 5 ohm resistor connected to a 150 V power supply is | show 🗑
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| show | more than 25 V
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| What is the resistance of a toaster that uses 5 A of current when connected to a 120 V power source? | show 🗑
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| When connected to a 110 V power supply, how much current is in a light bulb that has a resistance of 220 ohms? | show 🗑
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| If you accidentally grabbed the prongs of a partially plugged in 120 V electrical plug on a day when your skin resistance was 130,000 ohms, how much current would pass through your body? | show 🗑
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| How much power is used by a 12.0V car battery that draws 0.5 A of current? | show 🗑
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| show | 1.2 A
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| show | 1 A
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| show | 84 W
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| A 60 W light bulb and a 100 W light bulb are both rated at 120 V. Which light bulb has the larger resistance? | show 🗑
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| show | the 100 W bulb
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| show | 4
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| show | $3.000
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| show | 57,600 W
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| show | $1.08
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| how much voltage is required to make 4 amperes flow through a 12 ohm resistor? | show 🗑
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| A battery does 18J of work on 10 coulombs of charge. What voltage does the battery supply? | show 🗑
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| show | 0.5 Amps
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| show | 360 Watts
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| A certain bulb with a resistance of 240 ohms is labeled 60 W. For what voltage circuit was this bulb designed? | show 🗑
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| In order to form a electric circuit, you need to have | show 🗑
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| In order for a current to flow in a circuit, you must have | show 🗑
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| show | None of the above
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| show | can flow
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| show | same amount of current always flows through each bulb
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| The symbol used to represent resistance in a schematic diagram is | show 🗑
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| show | Larger than the resistance of any individual resistor
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| show | Smaller then the resistance of any of the resistors.
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| As more lamps are put into a series circuit, the overall current in the circuit | show 🗑
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| show | increases
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| Compared to the resistance of 2 resistors connected in series, the same two resistors connected in parallel have | show 🗑
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| When one light bulb in a series circuit containing several light bulbs burns out, the other light bulbs | show 🗑
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| When one light bulb in a parallel circuit containing several light bulbs burns out, the other light bulbs | show 🗑
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| show | voltage across each branch is always the same
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| In a simple parallel circuit | show 🗑
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| show | Parallel
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| Fuses and circuit breakers are used to | show 🗑
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| show | the positive wire is connected directly to the negative wire
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| show | Both voltages are the same
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| Two lamps, one with a thick filament and one with a thin filament, are connected in a parallel to a battery. The current is larger in the lamp with the | show 🗑
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| Two lamps, one with a thick filament and one with a thin filament, are connected in a series to a battery. The voltage is greater across the lamp with the | show 🗑
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| show | doubles
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| The total resistance of a 10 ohm resistor and a 7 ohm resistor in series is | show 🗑
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| The total resistance of a 6ohm resistor and a 12 ohm resistor in a parallel is | show 🗑
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| A 60 W light bulb and a 100 W light bulb are both connected in parallel to a 120 V outlet. Which bulb has more current in it? | show 🗑
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| show | 240ohms
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| show | 6
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| What is the equivalent resistance of a 30 ohm and a 20 ohm resistor connected in parallel? | show 🗑
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| show | 28
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