A thick wire is hanging from a wooden table. An anticlockwise magnetic field is to be
A thick wire is hanging from a wooden table. An anticlockwise magnetic field is to be produced around the wire by passing current through this wire by using a battery. Which terminal of the battery should be connected to the :
(a) top end of wire ?
(b) bottom end of wire ?
(c) Give reason for your choice.
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(a) Negative terminal
(b) Positive terminal
(c) Because the current should be passed into wire upwards.
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