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 ?

Give reason for your choice.

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Solution

(a) Negative terminal
(b) Positive terminal
This is because the current should be passed into the wire upwards according to maxwell's right hand thumb rule

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(a) Negative terminal (b) Positive terminal This is because the current should be passed into the wire upwards according to maxwell's right hand thumb rule

(a) Negative terminal
(b) Positive terminal
This is because the current should be passed into the wire upwards according to maxwell's right hand thumb rule