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Electromagnetism
The direction of induced current in a circuit is always such that it opposes the cause that produces it. This law was introduced by
Faraday
Lenz
Fleming
Johns Burge
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Electromagnetism
The process of generating an induced current in a circuit by changing the number of magnetic lines of force passing through it is called
electromagnetic difference
electromagnetic induction
electromotive force
potential difference
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Electromagnetism
Magnetic effect of current is called
magnetism
steady current
electric current
electromagnetism
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Electromagnetism
The direction of induced current always
opposes the cause
remains same as that of cause
equal to cause that produces it
directs the cause
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Comment
Electromagnetism
Generators produce electric current due to the movement of wires near
metals
small magnets
very large magnets
gases
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Electromagnetism
In a transformer, the primary coil is connected to
Alternating current (AC) source
Direct current (DC) source
resistor
inductor
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Electromagnetism
When a coil rotates in a magnetic field, the induced current in it continuously changes from
minimum to maximum value
maximum to minimum value
zero to maximum value
maximum to zero
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Electromagnetism
In coil, the change in the number of magnetic field lines will induce an
electromotive force
potential difference
electromagnetic force
none of above
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Electromagnetism
A magnetic field must produce a/an
electric current
field coil
pole
split
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Electromagnetism
The magnitude of induced e.m.f in a circuit depends on the
speed of relative motion of coil
speed of relative motion of magnet
number of turns of the coil
all of above
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