electromagnetic induction

mcqspedia.com has 9 Question/Answers about Topic electromagnetic induction

Lenz’s law is in accordance with law of conservation of

Lenz’s law is in accordance with law of conservation of
  • A. energy
  • B. mass
  • C. charge
  • D. momentum
  • Correct Answer: Option A

A helium nucleus enters perpendicularly in magnetic field ‘B’ with velocity ‘v’, then magnetic force acting on it will be

A helium nucleus enters perpendicularly in magnetic field ‘B’ with velocity ‘v’, then magnetic force acting on it will be
  • A. 2 Bev
  • B. zero
  • C. evB
  • D. evB/2
  • Correct Answer: Option A

A metallic ring is attached to wall of a room. When North Pole of magnet is brought near ring, induced current in ring is

A metallic ring is attached to wall of a room. When North Pole of magnet is brought near ring, induced current in ring is
  • A. zero
  • B. clockwise
  • C. anti-clockwise
  • D. infinite
  • Correct Answer: Option C

EMF produced in conductor is known as

EMF produced in conductor is known as
  • A. EMF
  • B. induced EMF
  • C. deduce EMF
  • D. both a and b
  • Correct Answer: Option B

Transformer is being used in

Transformer is being used in
  • A. DC circuit
  • B. AC circuit
  • C. DC motor
  • D. both a and b
  • Correct Answer: Option B

Moving a coil in and out of magnetic field induces

Moving a coil in and out of magnetic field induces
  • A. force
  • B. potential difference
  • C. e.m.f
  • D. voltage
  • Correct Answer: Option C

When field is parallel to plane of area, magnetic flux through coil is

When field is parallel to plane of area, magnetic flux through coil is
  • A. zero
  • B. infinite
  • C. 2
  • D. 5
  • Correct Answer: Option A

Total number of magnetic field lines passing through an area is called

Total number of magnetic field lines passing through an area is called
  • A. magnetic flux density
  • B. magnetic flux
  • C. e.m.f
  • D. voltage
  • Correct Answer: Option B

E.M.F can be induced in a circuit by

E.M.F can be induced in a circuit by
  • A. changing magnetic flux density
  • B. changing area of circuit
  • C. changing angle
  • D. all of above
  • Correct Answer: Option D