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4.2.5 Electrical energy and electrical power

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Question 27

A current I I\,I passes through a resistor of resistance R R\,R for a time ttt. The potential difference across the resistor is VVV.

Which equation represents the thermal energy E E\,E transferred by the resistor?

A

E=IR2tE = I R^2 tE=IR2t

B

E=I2RtE = I^2 R tE=I2Rt

C

E=I2RtE = \frac{I^2 R}{t}E=tI2R​

D

E=V2RtE = \frac{V^2 R}{t}E=tV2R​

Markscheme

4.2.5 Electrical energy and electrical power Questions

  1. IGCSE
  2. /Physics
  3. /4.2.5 Electrical energy and electrical power

69 exam-style questions on CIE IGCSE Physics 4.2.5 Electrical energy and electrical power. Each one has a worked solution and a mark scheme showing where the marks go.

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