Electricity Baby
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| Plank's Constant | E=hc/λ
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| Equation for PD, Amperes pand Resistance | V = IR
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| potential divider equation | V1/V2=R1/R2 as R2 increased, the value of V2 increased and value of V1 decreases.
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| (V-out) Output potential equation (potential divider) | V(out)=(R2/(R1+R2))xV(in)
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| Electron charge | 1.6*10^-19
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| Charge equation | Charge (coulumbs) = Current (amperes) x Time (seconds)
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| Number of electrons equation | Number of electrons = Charge/ charge electron Reason behind this is due to the being coulumbs is a greater value off the coulumb charge fo the electrons, the number of electrons must total the amount of electron charge to equal the total charge
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| Cross-sectional Area Equation? | πr^2
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| Drift Velocity equation? | V = I/Ane
Velocity= Current/( Cross-sectional Area x Number Density x Electron Charge)
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| Resistance of wire (in regards to resistivity) | R= pL/A Resistance(ohms) = Resistivity (ohms meter) x length (m) / Cross sectional area (meters squared)
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| Potential difference equation | V= IR Potential Differrence = Current x Resistance
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| Amps fundamental definition? | I=Q/T How much charge flows per second
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| is resistance a constant value? | Theoretically yes, as resistance should be constant if the temperature is constant however some things dont follow that rule.
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| internal resistance? | resistance from cell, kerschoffs 2nd law : E= VR + Vr where VR is terminal potential and Vr is loss volts. Vr increases and VR decreases when current increases.
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| Power dissipated | P=I^2*R= V^2/R = I^2*R
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Created by:
thomjj
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