Electromagnetism

Question 0

Resistors in series

Answer 0

V = V(1) + V(2) + V(3), or
IR = IR(1) + IR(2) + IR(3), or
R = R(1) + R(2) + R(3)

Question 1

Ohm’s Law

Answer 1

V=IR
V: potential difference, volts
I: current, amperes
R: resistance, ohms

Question 2

Resistors in Parallel

Answer 2

1/R = 1/R(1) + et al

Question 3

Electrical Power

Answer 3

P=VI=V^2/R

P in watts

Question 4

Capacitor

Answer 4

Stores charge: 1 farad is 1 coulomb stored for a potential difference of 1 volt. Capacitors present latent voltage hazard.