Question

1) A compass needle is placed near a current carrying wires. State your observation and givereason for the same in each case: -
a) magnitude of electric current in the wire is increased
b) The compass needle is displaced away from the wire
2) Two magnet s are lying side by side. Draw magnetic field lines between poles P and Q

S➖➖➖➖N S➖➖➖➖N
P Q

3) What does the degree of closeness of magnetic field lines near the poles signify?
4) Why do two magnetic field lines of force never intersect each other?
5) How would the strength of magnetic field due to current, carrying loop affected if :-
a) radius of the loop is reduced to half its original value?
b) strength of current through the loop is doubled?

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Answer 1

Answer:

when a compas is placed nearby a current carring wirre then the needle in the compas get deflection because the current carrying wire act as magnet