Physics 2 exam 1

q

charge (C)

k

Coloumb’s constant (Nm²/C²)

F, F_E, E_F

(electric) force (N)

U

potential energy (J)

V

potential (Volts)

E

Electric field (N/C or V/m)

Electric field vs electric force

feels other charges vs feels its own charge

What direction is the electric field felt in on a proton vs electron

same vs opposite

What direction does E point in

high to low V (potential)

P

power (watts)

I

electric current (Ampere)

ε

emf (volts)

R

electric resistance (Ohms Ω)

ρ

electric resistivity (ohm-meter Ωm intrinsic)

Ampere (A) = what divided by what

watts/volts = coulombs/seconds

What is represented by A in this image

Resistance (Ohms)

What is represented by B in this image

Voltage (Volts, so V or ε)

What is represented by C in this image

Current (Ampere)

work done by electric force formula

−ΔV*Q