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10.3 Electrical energy and power

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Question 16

Which row of the table shows two correct equations that can be used to calculate the current I I\,I through a filament lamp?

Equation 1Equation 2
AI=V÷RI = V \div RI=V÷RI=P÷VI = P \div VI=P÷V
BI=R÷VI = R \div VI=R÷VI=V÷PI = V \div PI=V÷P
CI=V÷RI = V \div RI=V÷RI=P×VI = P \times VI=P×V
DI=V×RI = V \times RI=V×RI=P÷VI = P \div VI=P÷V
A

Row A

B

Row B

C

Row C

D

Row D

Markscheme

10.3 Electrical energy and power Questions

  1. GCSE
  2. /Physics
  3. /10.3 Electrical energy and power

31 exam-style questions on Edexcel GCSE Physics 10.3 Electrical energy and power, covering 10.3.1 The heating effect of an electric current, 10.3.2 Reducing energy transfer in wires, 10.3.3 Advantages and disadvantages of the heating effect, 10.3.4 Energy transferred by an electrical circuit, 10.3.5 Electrical power, and 10.3.6 Energy transfers in domestic devices. Each one has a worked solution and a mark scheme showing where the marks go.

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