This diagram shows a wire XY that carries a constant direct current. Plotting compass R, placed alongside

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This diagram shows a wire XY that carries a constant direct current. Plotting compass R, placed alongside the wire, points due north. Compass P is placed below the wire and compass Q is placed above the wire.


a. State the direction of the current in the wire.

b. State in which direction compass P points.

c. State in which direction compass Q points if the current in the wire is reversed.

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Cambridge International AS And A Level Physics Coursebook

ISBN: 9781108859035

3rd Edition

Authors: David Sang, Graham Jones, Gurinder Chadha, Richard Woodside

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