Question

If the current through a 500 W heater is 4.00 A, what is the potential difference

across the ends of the heating element? *
O 2x10^3 V
8x10^-3 V
25 V
125 V

Answer 1

125 V

Step-by-step explanation:

Given,

Power ( P ) = 500 W

Current ( I ) = 4 A

To fine : -

Potential difference ( V ) = ?

Formula : -

P = V I

V = P / I

= 500 / 4

V = 125 V

Therefore,

the potential difference across the ends of the heating element is 125 V.