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4.2.5 Electrical energy and electrical power

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Question 8

There is a current I I\,I in a resistor of resistance R R\,R for a time ttt. The potential difference (p.d.) across the resistor is VVV.

Which equation gives the total electrical energy E E\,E dissipated as heat in the resistor?

A

E=IVtE = IVtE=IVt

B

E=IVtE = \frac{IV}{t}E=tIV​

C

E=I2VtE = I^2 V tE=I2Vt

D

E=IV2tE = \frac{I V^2}{t}E=tIV2​

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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