Physics 5054 · O Level · Magnetic effect of a current

Magnetic effect of a current — practice question

The diagram illustrates a relay used to turn on an electric motor. A student writes five statements to describe how the relay turns on the electric motor. The statements are not arranged in the correct sequence. What is the correct order of the statements?

  • A$1 \rightarrow 5 \rightarrow 2 \rightarrow 4 \rightarrow 3$
  • B$3 \rightarrow 2 \rightarrow 4 \rightarrow 1 \rightarrow 5$
  • C$3 \rightarrow 4 \rightarrow 1 \rightarrow 5 \rightarrow 2$
  • D$5 \rightarrow 1 \rightarrow 4 \rightarrow 2 \rightarrow 3$

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