Question

An electric car is designed to run off a bank of 14.0-V batteries with total energy storage of 3.00 × 10 7 J. If the electric motor draws 7 000 W, what current will be delivered to the motor?

Answer 1

Answer:

I =500 A    

Explanation:

Given that

Power ,P = 700 W

Potential difference ,ΔV = 14 V

Lets take current = I

We know that power P is given as

P = V I

I=Current

ΔV =Voltage difference

P=Power

Now by putting the values in above equation

7000 = 14 x I

$I=\dfrac{7000}{14}\ A$

I =500 A

Therefore the current will be 500 A.