Question

A car battery provides a voltage of 12 V to a vehicle. If 32 A of

current are drawn on a hot summer evening when the air conditioning
and lights are running, what is the resistance provided by the
electrical elements of the car?
A. 44 Ohms
B. 20 Ohms
C. 2.6 Ohms
D. 0.375 Ohms

Answer 1

The resistance provided by the electrical elements is;

D. 0.375 Ohms

Step-by-step explanation:

The relationship between the voltage, V, current, I, and resistance, R of an electric circuit is given as follows;

V = I × R

The given parameters of the circuit are;

The voltage provided by the car battery, V = 12 V

The current drawn by the air conditioning and lights, I = 32 A

From, V = I × R, we have;

R = V/I

Therefore, by substituting the known values, we have;

R = 12 V/(32 A) = 0.375 Ohms

The resistance provided by the electrical elements, R = 0.375 Ohms