Quick questions on Electric circuits and Ohm's law: QCE Physics Unit 1 Year 11

4short 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 wrong power formula?

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Match to your knowns.

What is q1?

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Define electric current in terms of charge, and calculate the current when

90 \text{ C}

flows through a wire in

30 \text{ s}

. [2 marks]

What is q2?

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A heater of resistance

24 \text{ ohms}

is connected to a

240 \text{ V}

supply. Calculate the current drawn and the power dissipated, and state the total energy dissipated in

5.0

minutes. [4 marks]

What is q3?

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A student wires three

6.0 \text{ ohm}

resistors. (a) Find the equivalent resistance in series and in parallel. (b) Across a

12 \text{ V}

supply, find the supply current in each case.

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