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#	Question	Subject and topic	Difficulty
81	A radial magnetic field is used in a moving coil galvanometer so that:	Physics Current loop as a magnetic dipole	Easy
82	A current loop is placed in a uniform magnetic field. The torque on it is maximum when:	Physics Current loop as a magnetic dipole	Hard
83	A bar magnet of moment 2 A m² is placed at 30° to a uniform field of 0.3 T. The torque on it is:	Physics Bar magnet and magnetic materials	Easy
84	Which of the following is diamagnetic?	Physics Bar magnet and magnetic materials	Easy
85	A material has magnetic susceptibility 499. Its relative permeability is:	Physics Bar magnet and magnetic materials	Medium
86	Magnetic field lines of a bar magnet:	Physics Bar magnet and magnetic materials	Medium
87	When a ferromagnetic substance is heated above its Curie temperature, it becomes:	Physics Bar magnet and magnetic materials	Hard
88	The magnetic flux through a 100-turn coil falls from 0.05 Wb to 0.01 Wb in 0.2 s. The average induced emf is:	Physics Faraday’s and Lenz’s laws	Easy
89	A rod 0.2 m long moves at 10 m/s perpendicular to a uniform field of 0.5 T. The emf across its ends is:	Physics Faraday’s and Lenz’s laws	Easy
90	Lenz’s law is a consequence of the law of conservation of:	Physics Faraday’s and Lenz’s laws	Medium
91	The SI unit of magnetic flux is:	Physics Faraday’s and Lenz’s laws	Medium
92	The cores of transformers are laminated mainly to:	Physics Faraday’s and Lenz’s laws	Hard
93	The current in a 0.2 H coil falls uniformly from 5 A to zero in 0.1 s. The average self-induced emf is:	Physics Self and mutual induction	Easy
94	The energy stored in an inductor of 0.2 H carrying 5 A is:	Physics Self and mutual induction	Easy
95	The SI unit of inductance is:	Physics Self and mutual induction	Medium
96	If the number of turns of a solenoid is doubled, keeping its length and area the same, its self-inductance be…	Physics Self and mutual induction	Medium
97	The mutual inductance between two coils does NOT depend on:	Physics Self and mutual induction	Hard
98	The peak value of an AC voltage is 325 V. Its RMS value is about:	Physics Alternating current	Easy
99	The reactance of a 0.1 H inductor at 50 Hz is about:	Physics Alternating current	Easy
100	A series LCR circuit has R = 30 Ω, X_L = 80 Ω and X_C = 40 Ω. Its impedance is:	Physics Alternating current	Medium