Electromagnetic Induction & Alternating Currents (BITSAT Physics): Questions 1 - 5 of 9

Get 1 year subscription: Access detailed explanations (illustrated with images and videos) to 228 questions. Access all new questions we will add tracking exam-pattern and syllabus changes. View Sample Explanation or View Features.

Rs. 200.00 or

Question number: 1

» Electromagnetic Induction & Alternating Currents » Induced EMF and Current

MCQ▾

Question

In a coil of self – inductance 5Henry , the rate of change of current is 2 ampere per second. The emf induced in the coil is –

Choices

Choice (4) Response

a.

5V

b.

5V

c.

10V

d.

10V

Question number: 2

» Electromagnetic Induction & Alternating Currents » Peak and RMS Value of AC

MCQ▾

Question

An electric lamp is connected to 220V , 50Hz supply. The peak voltage is –

Choices

Choice (4) Response

a.

210V

b.

320V

c.

311V

d.

211V

Question number: 3

» Electromagnetic Induction & Alternating Currents » Induced EMF and Current

MCQ▾

Question

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.

Hall effect

b.

Joule effect

c.

Seeback effect

d.

Peltier effect

Question number: 4

» Electromagnetic Induction & Alternating Currents » AC Generator and Transformer

MCQ▾

Question

In a transformer, the number of turns of primary coil and secondary coil are 5 and 4 , respectively. If 240V is applied on the primary coil, then the ration of current in primary and secondary coil is –

Choices

Choice (4) Response

a.

9:5

b.

5:4

c.

5:9

d.

4:5

Question number: 5

» Electromagnetic Induction & Alternating Currents » Induced EMF and Current

MCQ▾

Question

In an A. C. circuit the potential different across an inductance and resistance joined in series are respectively 16V and 20V . The total potential different across the circuit is –

Choices

Choice (4) Response

a.

20.0V

b.

25.6V

c.

31.9V

d.

53.5V

Sign In