Quick questions on DC circuits: Kirchhoff's laws, e.m.f., internal resistance and potential dividers - 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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A cell of e.m.f.

1.5\ \text{V}

and internal resistance

0.5\ \Omega

drives a current of

0.4\ \text{A}

. Find the terminal potential difference.

What is q2?

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State Kirchhoff's first law and the conservation principle it follows from. [2 marks]

What is q3?

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Two resistors of

6.0\ \Omega

and

12\ \Omega

are connected in parallel. Find their combined resistance. [2 marks]

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