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A2 2 Fields, Capacitors, Particles and Astronomy

Quick questions on Electric fields: Coulomb's law, field strength and potential - CCEA 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?
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Two parallel plates 0.020 m0.020\ \text{m} apart have a potential difference of 300 V300\ \text{V}. Find the field strength between them. [2 marks]
What is q2?
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State one similarity and one difference between electric and gravitational fields. [2 marks]
What is q3?
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Find the force on a charge of 2.0 nC2.0\ \text{nC} placed at a point where the electric field strength is 5.0×104 V m−15.0 \times 10^{4}\ \text{V m}^{-1}. [2 marks]

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