Question

A 12 V storage battery is charged by a current of 20 A for 1 hr. A) How much power is required to charge the battery at this rate? B) How much energy has been provided during the process?

Answer 1

A) 240 W

B) 864000 J

Step-by-step explanation:

Hi!

We can easily calculate the required power multiplying the voltage of the process times the circulating current:

`P=12V* 20A=12((J)/(coulomb))*20((coulomb)/(s))\\P = 240(J)/(s)=240W`

To calculate the total energy provided we need to multiply the power times the total time:

`E=P* t=240(J)/(s) * 1 hr =240(J)/(s) * 3600s\\ E=864 000J`

Hope this helps

Have a nice day!