Question

A compass needle is placed near a current carrying wire. State your observation for the following cases and give reason for the same in each case.
a) magnitute of electric current in a wire is increased.

b)A compass needle is displaced away from the wire.

plz give correct answer and don't copy​

Answer 1

Answer:

In this case compass needle is deflected

due to the influence of magnetic field of current carrying wire

Now,

as we know that magnetic field is directly related to strength of current and inversely related to radius ( distance between wire and point of observation)

Therefore,

a) As strength of current increase,then the deflection of compass needle also increase

And,

b) As compass displace away from wire the radius is increased and as a result deflection of compass needle decrease

This are the following observation and it's

reasons

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