Question

what is the energy of a device of 500 w used in 250 v for 5 minutes?​

Answer 1

Answer:

R=125

Explanation:

The power rating of the electric bulb, P=500 W

Voltage, V=250 V

i) We know,

P=VI

⟹I=

V

P

I=

250

500

I=2 A

ii) V=IR

⟹R=

I

V

R=

2

250

Ω