Question

A car radio draws 0.27 A of current in the autos 12-V electrical system. (a) How much electric power does the radio use?

(b) What is the effective resistance of the radio?

Answer 1

(a) 3.24 w (b) 44.44 ohm

Step-by-step explanation:

It is given that car draws 0.27 A current so current I = 0.27 A

The system has a voltage of 12 V

(a) Electrical power = voltage ×current
`=12* 0.27=3.24W`

(b) The resistance is defined as the ratio of voltage and current

So resistance
`R=(V)/(I)=(12)/(0.27)=44.44 ohm`