Quick questions on Series and parallel circuits and Kirchhoff's laws (QCE Physics Unit 1)

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 current law and voltage law. [2 marks]

What is q2?

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Three resistors of

6.0

3.0

and

2.0 \text{ ohms}

are connected in parallel across a

12 \text{ V}

supply. Calculate

R_{eq}

, the total current, and the current in the

3.0 \text{ ohm}

branch. [4 marks]

What is q3?

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A circuit has a

12 \text{ V}

EMF with

4.0 \text{ ohms}

in series with a parallel pair

6.0 \text{ ohms}

and

3.0 \text{ ohms}

. (a) Determine the equivalent resistance. (b) Calculate the current from the EMF and the voltage across the parallel pair.

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