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Fields and their consequences (A-level only)

Fields and their consequences (A-level only)

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Question 84

In a resistor of resistance RRR, a steady current I I\,I dissipates a power PPP. In a resistor of resistance R3\displaystyle \frac{R}{3}3R​ there is an alternating current of root mean square value 2I2I2I. What is the mean power dissipated in the resistor of resistance R3\displaystyle \frac{R}{3}3R​?

A

4P4P4P

B

43P\frac{4}{3}P34​P

C

23P\frac{2}{3}P32​P

D

49P\frac{4}{9}P94​P

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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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