Magnetism and Electromagnetism | Practice MCQs Physics for Mdcat | mosaicbro.com

Magnetism and Electromagnetism | Practice MCQs Physics for Mdcat

7 of 127 questions (Page 14 of 19)

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92 The magnitude of e.m.f. across the secondary coil of a transformer does not depend upon:
Correct Answer: D
Explanation: Transformer emf depends on turns ratio, not resistance.
93 Magnetic fields do not interact with:
Correct Answer: D
Explanation: Magnetic fields only affect moving charges or magnets.
94 The needle of a magnetic compass:
Correct Answer: B
Explanation: Compass needles align with magnetic field lines.
95 Tick the correct relation:
Correct Answer: B
Explanation: 1 Tesla = $10^4$ Gauss.
96 Tick the wrong statement:
Correct Answer: D
Explanation: Force is proportional to $q$ and $v$ ($F = qvB \sin \theta$).
97 Electromotive force is most closely related to:
Correct Answer: B
Explanation: Emf is energy per unit charge, akin to potential difference.
98 The e.m.f. produced in a wire by its motion across a magnetic field does not depend upon:
Correct Answer: B
Explanation: Motional emf depends on $B$, $v$, $L$, and orientation, not material.
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