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Subjects
Science CBSE
Class 10
Magnetic effects of electric current
The concepts, laws and applications of magnetic effects
15.
NTSE questions and solutions
Exercise condition:
2
m.
Select the correct answer
:
1
.
A straight conducting wire is placed parallel to and over a compass needle. The deflection in the needle __________.
becomes opposite when the direction of the current is reversed
remains in the same direction even on reversing the direction of current
is negligible on reversing the direction of current
keeps fluctuating on passage of current in any direction
2
.
Increase in number of turns of a coil in the solenoid will __________.
will add to the strength of the magnetic field
will change the direction of the magnetic field
will decrease the strength of the magnetic field
have no effect on the strength of magnetic field
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