electromagnetism

mcqspedia.com has 5 Question/Answers about Topic electromagnetism

A power line 10 m high carries current 200 A, magnetic field will be

A power line 10 m high carries current 200 A, magnetic field will be
  • A. None
  • B. None
  • C. None
  • D. None
  • Correct Answer: Option C

Product of force and moment arm is known as

Product of force and moment arm is known as
  • A. potential difference
  • B. voltage
  • C. torque
  • D. inertia
  • Correct Answer: Option C

Torque of couple is given by ILB × a, in which a is a/an

Torque of couple is given by ILB × a, in which a is a/an
  • A. momentum
  • B. moment arm
  • C. arm
  • D. moment of inertia
  • Correct Answer: Option B

Value of magnetic field that will cause a max force of 7 × 10-3N on a 20 cm wire carrying current of 10 A will be

Value of magnetic field that will cause a max force of 7 × 10-3N on a 20 cm wire carrying current of 10 A will be
  • A. None
  • B. None
  • C. None
  • D. None
  • Correct Answer: Option A

In a magnetic field of 2.50 × 10-3 T, if magnetic force is equal to proton’s weight, then proton moves with speed of

In a magnetic field of 2.50 × 10-3 T, if magnetic force is equal to proton’s weight, then proton moves with speed of
  • A. None
  • B. None
  • C. None
  • D. None
  • Correct Answer: Option B