Question

The electric motor in the car is powered by a battery. To charge the battery, the car is plugged into the mains supply at 230 V. The power used to charge the battery is 6.9 kW

Calculate the current used to charge the battery.

Please help me

Answer 1

I = 30 A.

Step-by-step explanation:

Given that,

The voltage of the battery, V = 230 V

Power used to charge the battery, P = 6.9 kW

We need to find the current used to charge the battery. The formula for the power is given by :

P = VI

Where

I is current

So,

`I=(P)/(V)\\\\I=(6.9* 10^3)/(230)\\\\=30\ A`

So, the required current is 30 A.