Question

2) Given R = 3 ohms and R, = 1 ohm and V = 12 volts

I
a) Find the total resistance.
b) Find the current in the circuit:
c) Find the voltage drop in each resistor:

Answer 1

a) because this is in series, we have:

the total resistance is 3 + 1 = 4 (ohm)

b) the curren in the circuit is 12/4 = 3 (A)

c) the voltage in R = 3 ohm is 3.3 = 9 (V)

the voltage in R = 1 ohm is 12 - 9 = 3 (V)