During one year, 2.42 × 10¹⁹ J of energy was transferred from National Grid. Some houses use solar cells to generate electricity. When the energy generated by the solar cells is not needed, the energy is stored in a battery.A house has solar cells on the roof. 31 000 C of charge flows through the cable from the solar cells to the battery in a 24 hour period. The potential difference in the circuit is 3.3 V. Determine the power lost due to heating in the cable. Give your answer to 2 significant figures.

Q1.

During one year, 2.42 × 10¹⁹ J of energy was transferred from National Grid.

Some houses use solar cells to generate electricity. When the energy generated by the solar cells is not needed, the energy is stored in a battery.

A house has solar cells on the roof. 31 000 C of charge flows through the cable from the solar cells to the battery in a 24 hour period.

The potential difference in the circuit is 3.3 V.

Determine the power lost due to heating in the cable.

Give your answer to 2 significant figures.

Power = …………………………… W