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Alternating Current · CSEC Physics

17 past-paper questions on Alternating Current, part of Electricity and Magnetism, from every CSEC Physics paper on Quelpr.

Practise Alternating Current
  1. 5(d)(i)2 marks· CSEC Physics · 1989 · Paper 2What is the frequency of the sound that is heard?
  2. 5(a)(i)2 marks· CSEC Physics · 1990 · Paper 2State the essential difference between direct current and alternating current.
  3. 5(b)(i)3 marks· CSEC Physics · 2021 · Paper 2Calculate the value of the frequency for the generator.
  4. 5(c)(i)2 marks· CSEC Physics · 2021 · Paper 2State the effect this will have on the period of the output.
  5. 1(d)(ii)2 marks· Physics Q1 1(d)(ii)If the period of rotation of the coil is 0.02 s, calculate its frequency.
  6. 1(d)(iii)2 marks· Physics Q1 1(d)(iii)If the speed and direction of rotation of the coil are constant, sketch a graph of voltage (V) against time (s) to show the output for the generator for one complete cycle, given that it starts rotating from its current…
  7. 2(b)(iii)1 mark· Physics Q2 2(b)(iii)Name the type of voltage produced at A.
  8. 3(a)(iii)1 mark· Physics Q3 3(a)(iii)Sketch the V – t graph across a battery power source.
  9. 3(a)(iv)1 mark· Physics Q3 3(a)(iv)What is the similarity in the voltage between (ii) and (iii)?
  10. 3(b)(i)3 marks· Physics Q3 3(b)(i)Identify the type of current (d.c. or a.c.) which generated the specific waveforms A, B and C shown in Table 4.
  11. 3(b)(ii)4 marks· Physics Q3 3(b)(ii)Determine the period and frequency for Waveform C.
  12. 3(d)(i)2 marks· Physics Q3 3(d)(i)value of the peak to peak voltage
  13. 3(d)(ii)2 marks· Physics Q3 3(d)(ii)period of the alternating voltage, in seconds
  14. 3(d)(iii)4 marks· Physics Q3 3(d)(iii)frequency of the alternating voltage from the supply.
  15. 4(b)(i)3 marks· Physics Q4 4(b)(i)Calculate the period and frequency of the alternating supply.
  16. 4(b)(ii)3 marks· Physics Q4 4(b)(ii)The component labelled A in Figure 2 makes 10 revolutions in one second. On the grid provided, sketch a graph to represent the variation of output current with time during the first two revolutions. Indicate the SCALE…
  17. 4(b)(iii)a)2 marks· Physics Q4 4(b)(iii)a)The speed of rotation of component A is tripled with no other change involved. Determine the effect on the period of the output current.

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