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4.2.4a Resistance

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Question 8

A circuit contains a variable resistor connected to a variable power supply.

The table shows the currents for different values of the potential difference (p.d.) and the resistance:

p.d. / Vresistance / Ωcurrent4.08I112.08I24.04I3 \begin{array}{|c|c|c|} \hline \text{p.d. / V} & \text{resistance / } \Omega & \text{current} \\ \hline 4.0 & 8 & I_1 \\ \hline 12.0 & 8 & I_2 \\ \hline 4.0 & 4 & I_3 \\ \hline \end{array} p.d. / V4.012.04.0​resistance / Ω884​currentI1​I2​I3​​​

What is the order of the currents from smallest to largest?

A

I1→I2→I3I_1 \rightarrow I_2 \rightarrow I_3I1​→I2​→I3​

B

I1→I3→I2I_1 \rightarrow I_3 \rightarrow I_2I1​→I3​→I2​

C

I2→I1→I3I_2 \rightarrow I_1 \rightarrow I_3I2​→I1​→I3​

D

I3→I1→I2I_3 \rightarrow I_1 \rightarrow I_2I3​→I1​→I2​

Markscheme

4.2.4a Resistance Questions

  1. IGCSE
  2. /Physics
  3. /4.2.4a Resistance

132 exam-style questions on CIE IGCSE Physics 4.2.4a Resistance. Each one has a worked solution and a mark scheme showing where the marks go.

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