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Fields and their consequences (A-level only)

Fields and their consequences (A-level only)

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Question 26

A steady direct current of intensity I I\,I passes through a calibration resistor of resistance RRR, dissipating a power PPP. An alternating current with a peak current of 3I 3I\,3I is passed through a heating element of resistance R2\displaystyle \frac{R}{2}2R​.

What is the mean power dissipated in the heating element?

A

4.5P4.5 P4.5P

B

2.25P2.25 P2.25P

C

1.125P1.125 P1.125P

D

9P9 P9P

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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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