GCSE Standard Questions: The Motor Effect

Q5. The diagram below shows a loudspeaker made by Lex. When there is a current in the coil the paper cone moves.

Lex used the loudspeaker to investigate how changing the size of the current in the coil of wire affects the distance moved by the paper cone.

(a) State two variables Lex should control.

[2 marks]

(b) The results of the his investigation are shown in the graph below.

(i) When the current increases from 0.5 A to 0.9 A, how much does the distance moved increase?

[2 marks]

(ii) State two conclusions Lex can make from the graph.

[2 marks]

(Total 6 marks)