In which of the following cases more electrical energy is consumed per hour? a) A current of 1 ampere passed through a resistance of 300 ohms A current of 2 amperes passed through a resistance of 100 ohms

1. Answer:
2. Given,

R = 300 ohm I = 1 amp

T = 1 hour

P = I2R = 300W

E = PT = 300 watt-hour

1. Given,

R = 100 ohm I = 2 amp

T = 1 hour

P = I2R = 400W

E = PT = 400 watt-hour

Therefore, in second case the consumption of electrical energy per hour is more.