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Physics 10 Chapter 15 - Electromagnetism - 12
1.
When a generator is enclosed inside a closed circuit, what does the induced e.m.f. generates?
a) Magnetic field
b) Mutual induction
c) Electric current
d) Magnetism
2.
Using which principle, metal detectors detect metal weapons?
a) Electromagnetic Induction
b) Mutual Induction
c) Self Induction
d) Electrolysis
3.
An A.C generator converts...................?
a) Mechanical energy into electrical energy
b) Electrical energy into sound energy
c) Sound energy into mechanical energy
d) Electrical energy into mechanical energy
4.
When would be the current produced in the coil zero?
a) When loop of coil is at 45° angle to magnetic lines
b) When loop of coil is perpendicular to magnetic lines
c) When loop of coil is parallel to magnetic lines
d) When loop of coil is at 60° angle to magnetic lines
5.
When would be the current produced in the coil minimum?
a) When loop of coil is in vertical position
b) When loop of coil is in horizontal position
c) When loop of coil is perpendicular to magnetic lines
d) When loop of coil is at 60° angle to magnetic lines
6.
When would be the current produced in the coil maximum?
a) When loop of coil is at 60° angle to magnetic lines
b) When loop of coil is parallel to magnetic lines
c) When loop of coil is perpendicular to magnetic lines
d) When loop of coil is at 45° angle to magnetic lines
7.
When would be the current produced in the coil maximum?
a) When loop of coil is in horizontal position
b) When loop of coil is at 60° angle to magnetic lines
c) When loop of coil is in vertical position
d) When loop of coil is perpendicular to magnetic lines
8.
What is output in case of A.C motor?
a) Sound energy
b) Electrical energy
c) Mechanical energy
d) Kinetic energy
9.
What is the phenomenon of production of induced current in one coil due to change in a neighbouring coil called?
a) Electrostatic induction
b) Electromagnetic induction
c) Momentum
d) Mutual induction
10.
What is input in case of A.C motor?
a) Electrical energy
b) Sound energy
c) Light energy
d) Mechanical energy
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