Electromagnetic Induction & Alternating Currents [BITSAT (Birla Institute of Technology & Science Admission Test) Physics]: Questions 1 - 6 of 21

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Question 1

Question MCQ▾

In a coil of self – inductance , the rate of change of current is 2 ampere per second. The emf induced in the coil is –

Choices

Choice (4)Response

a.

b.

c.

d.

Edit

Question 2

Question MCQ▾

An electric lamp is connected to , supply. The peak voltage is –

Choices

Choice (4)Response

a.

b.

c.

d.

Edit

Question 3

Question MCQ▾

The phenomenon of production of emf in a current carrying metallic strip on applying a magnetic field along a direction perpendicular to the direction of flow of current is known as –

Choices

Choice (4)Response

a.

Joule effect

b.

Seeback effect

c.

Peltier effect

d.

Hall effect

Edit

Question 4

Question MCQ▾

In a transformer, the number of turns of primary coil and secondary coil are and , respectively. If is applied on the primary coil, then the ration of current in primary and secondary coil is –

Choices

Choice (4)Response

a.

b.

c.

d.

Edit

Question 5

Question MCQ▾

In an A. C. circuit the potential different across an inductance and resistance joined in series are respectively and . The total potential different across the circuit is –

Choices

Choice (4)Response

a.

b.

c.

d.

Edit

Question 6

Question MCQ▾

Which law follows the law of conservation of energy?

Choices

Choice (4)Response

a.

Maxwell՚s law

b.

Kirchhoff՚s law

c.

Lenz՚s law

d.

Ampere՚s law

Edit