Quick questions on Electrical circuits: Kirchhoff's laws, internal resistance and potential dividers - OCR A-Level Physics A

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

What is q2?

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Two resistors of

6.0\ \Omega

and

3.0\ \Omega

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

What is q3?

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A cell of emf

9.0\ \text{V}

and internal resistance

1.0\ \Omega

drives a current of

1.5\ \text{A}

. Find the terminal p.d. [2 marks]

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