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