Second Year Physics Chapter 15 Online MCQ Test for 2nd Year Physics Chapter 15 Electromagnetic Induction Preparation

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FSc Part II Physics Chapter 0 Important MCQ's

Sr.#	Question	Answer
1	Electromagnetic induction obeys law of conservation	A. Charge B. Energy C. Momentum D. Mass
2	Which of the following quantities remain constant in step up transformer?	A. Current B. Voltage C. Power D. Heat
3		A. Lenz's law B. Faraday's law C. Ampere's law D. None of these
4	Commentator was invented by	A. Henry B. Ousted C. Maxwell D. William sturgeon
5	The movement of conductor in magnetic field produces electrical current was discovered in:	A. 1931 B. 1731 C. 1842 D. 1831
6	The magnitude of back emf:	A. Increases with sped of motor B. Decreases with speed of motor C. Remains same  D. None of above
7	In a coil current change from 2 to 4 A in .05 s . If the average induced emf is 8 V then coefficient of self-inductance is:	A. 0.2 henry B. 0.1 henry C. 0.8 henry D. 0.04 henry
8	In case of inductor , energy is stored in the	A. Electric field B. Magnetic field C. Potential field D. Gravitational field
9	For step down transformer	A. Ns>Np B. Np > Ns C. Ns = Np D. Ns > > > Np
10	Energy density in an inductor is.	A. Directly proportional to magnetic field B. Directly proportional to square of magnetic field C. Inversely proportional to magnetic field D. Inversely proportional to square of magnetic field