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question_answer1) Directions: In the following questions, A statement of Assertion (A) is followed by a statement of Reason (R) Mark the correct choice as. Assertion (A): Faraday's laws of electromagnetic induction are consequences of law of conservation of energy. Reason (R): The parameter LR in a L-R circuit has the dimension of time.
question_answer2) Assertion (A): When two identical loops of copper and Aluminium are rotated with same speed in the same magnetic field, the induced e.m.f. will be same. Reason (R): Resistance of the two loops are equal.
question_answer3) Assertion (A): Lenz's law does not violets the principle of conservation of energy. Reason (R): Induce e.m.f. never opposes the change in magnetic flux that causes the e.m.f.
question_answer4) Assertion (A): If the number of turns of a coil is increased, it becomes more difficult to push a bar magnet towards the coil. Reason (R): The difficulty faced is according to Lenz's law.
question_answer5) Assertion (A): When the magnetic flux changes around a metallic conductor, the eddy current is produced. Reason (R): Electric potential determines the flow of charge.
question_answer6) Assertion (A): The cores of electromagnets are made of soft iron. Reason (R): Coercivity of soft iron is small.
question_answer7) Assertion (A): Mutual inductance becomes maximum when coils are wound on each other. Reason (R): Mutual inductance is independent of orientation of coils.
question_answer8) Assertion (A): Self-inductance may be called the inertia of electricity. Reason (R): Due to self-inductance, opposing induced e.m.f. is generated in a coil as a result of change in current or magnetic flux linked with the coil.
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