9702 · topic questions
Characteristics of alternating currents
6 past-paper questions on Characteristics of alternating currents
Use data from (b), including your answer in (b)(iii), to show by calculation that the mean power in the 680 Ω resistor is half of…
Practise the full question →On Fig. 8.3, sketch the variation of the power P in the resistor with t between t = 0 and t = 2T.
Practise the full question →The variation of V with t can be described by V = A sin Bt where A and B are constants. Determine the values of A and B. Give…
Practise the full question →Determine the peak power P₀ in the resistor.
Practise the full question →Use the answer in (b)(ii) to explain why the mean power in the resistor is ¼ P₀.
Practise the full question →The circuit of Fig. 7.1 is disconnected, and R is connected directly across the power supply. Explain, without calculation, how…
Practise the full question →
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Characteristics of alternating currents (9702) past-paper questions — marked instantly
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