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4.2.5 Electrical energy and electrical power

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Question 9

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

Which equation gives the power P P\,P dissipated by the resistor?

A

P=V2RP = V^2 RP=V2R

B

P=V2RP = \frac{V^2}{R}P=RV2​

C

P=IR2P = I R^2P=IR2

D

P=VRP = \frac{V}{R}P=RV​

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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