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Fields and their consequences (A-level only)

Fields and their consequences (A-level only)

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Question 54

A calibration test compares two electric heating elements. Element 1 has resistance R R\,R and is operated by a direct current III, dissipating a power PPP.

Element 2 has a resistance of 2.5R 2.5R\,2.5R and is operated by a sinusoidal alternating current with a peak current of 4I4I4I.

What is the average power dissipated in Element 2?

A

10P10P10P

B

20P20P20P

C

40P40P40P

D

80P80P80P

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Fields and their consequences (A-level only) Questions

  1. A Level
  2. /Physics
  3. /Fields and their consequences (A-level only)

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