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Gauss Law for Magnetism
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Gauss's Law for Magnetism
Gauss's Law for Magnetism
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Gauss Law for Magnetism
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Gauss's Law for Magnetism
3 mins
Important Questions
Use Lenz's law to determine the direction of induced current in the situations described by Fig.(a) A wire of irregular shape turning into a circular shape;(b) A circular loop being deformed into a narrow straight wire.
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Two identical coaxial circular loops carry a current i each circulating in the same direction. If the loops approach each other, you will observe that the current in
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A metallic rod of mass per unit length
0
.
5
kg
m
−
1
is lying horizontally on a smooth inclined plane which makes an angle of
3
0
o
with the horizontal. The rod is not allowed to slide down by a flowing a current through it when a magnetic field of induction
0
.
2
5
T is acting on it in the vertical direction. The current flowing in the rod to keep it stationary is?
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A square loop of wire, side length 10 cm is placed at angle of
4
5
o
with a magnetic field that changes uniformly from 0.1 T to zero in 0.7 seconds. The induced current in the loop ( its resistance is
1
Ω
) is
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A short-circuited coil is placed in a time-varying magnetic field. Electrical power is dissipated due to the current induced in the coil. If the number of turns were to be quadrupled and the wire radius halved, the electrical power dissipated would be:
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A metal ring is held horizontally and a bar magnet is dropped through the ring with its length along the axis of the ring. The magnet falls with an acceleration:
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Lenz's law is in accordance with the law of
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A conducting wire frame is placed in a magnetic field which is directed into the plane of the paper (figure). The magnetic field is increasing at constant rate. The directions of induced currents in wires
A
B
and
C
D
are
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State Lenz's law.
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What is Gauss's law in magnetism? What does it represent?
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