Quick questions on Power and energy - WJEC GCSE Electronics (2)

2short Q&A pairs drawn directly from our worked dot-point answer. For full context and worked exam questions, read the parent dot-point page.

What is q1?

Show answer

A heater element of resistance

20\,\Omega

carries a current of

3.0\,\text{A}

. Calculate the power. [2 marks]

What is q2?

Show answer

12\,\text{W}

lamp is on for

2.0

minutes. Calculate the energy transferred. [2 marks]

Have a question we have not covered?

This dot-point answer is short enough that we have not extracted many short questions yet. Read the full dot-point answer or ask Mo, our study assistant, in the chat for follow ups.

All ElectronicsQ&A pages