Quick questions on Capacitance: stored charge and energy, and exponential discharge with time constant RC - Eduqas A-Level Physics

3short 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

Define capacitance and state its unit. [2 marks]

What is q2?

Show answer

100\ \mu\text{F}

capacitor is charged to

20\ \text{V}

. Find the energy stored. [2 marks]

What is q3?

Show answer

A capacitor discharges through a resistor with time constant

RC = 2.0\ \text{s}

. State the fraction of the initial charge remaining after

2.0\ \text{s}

. [1 mark]

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 PhysicsQ&A pages