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Electromagnetic Induction Set 5
Results
#1.
The induced e.m.f. is produce due to
Motion of coil
Motion of coil
Motion of magnet
Motion of magnet
The rate of change of flux
The rate of change of flux
None
None
#2.
The direction of induced current is always so as to oppose the change which causes the current is called:
Faraday's law
Faraday's law
Lenz's law
Lenz's law
Ohm's law
Ohm's law
Kirchhoff's 1" rule
Kirchhoff's 1" rule
#3.
The energy stored per unit volume inside a solenoid is calculated by:
1/2 B2/ μο (Al)
1/2 B2/ μο (Al)
1/2 B2/ μο
1/2 B2/ μο
1/2 μο / B2 (AI)
1/2 μο / B2 (AI)
1/2 μο/B2
1/2 μο/B2
#4.
The SI units of induced emf is
Ohm
Ohm
Tesla
Tesla
Henry
Henry
Volt
Volt
#5.
The principle of an alternating current generator is based on:
Coulomb's law
Coulomb's law
Ampere's law
Ampere's law
Faraday's law
Faraday's law
Lenz law
Lenz law
#6.
The inductance is more in self-induction in:
Air cored coil
Air cored coil
Iron cored coil
Iron cored coil
Tungsten cored coil
Tungsten cored coil
None of these
None of these
#7.
One henry is equal to:
1 ohm x 1 second
1 ohm x 1 second
1 ohm x 1 meter
1 ohm x 1 meter
1 ohm x 1 coulomb
1 ohm x 1 coulomb
None of these
None of these
#8.
A device which converts electrical energy into mechanical energy is called:
Transformer
Transformer
AC generator
AC generator
DC motor
DC motor
DC generator
DC generator
#9.
When constant current flows in primary of transformer, then the emf induced across secondary of transformer is:
Zero
Zero
Constant
Constant
Alternating
Alternating
Irregular
Irregular
Finish
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