Electromagnetic Induction & Alternating Currents (NEET Physics): Questions 9 - 11 of 121

Get 1 year subscription: Access detailed explanations (illustrated with images and videos) to 2099 questions. Access all new questions we will add tracking exam-pattern and syllabus changes. View Sample Explanation or View Features.

Rs. 550.00 or

Question number: 9

» Electromagnetic Induction & Alternating Currents » Faraday's Law

MCQ▾

Question

A thin semicircular conducting ring of radius R is falling with its plane vertical in a horizontal magnetic induction B. At the position MNQ shown in the fig, the speed of the ring is V. The potential difference developed across the semicircular ring is,

A thin semicircular ring in magnetic field

A Thin Semicircular Ring in Magnetic Field

A thin semicircular conducting ring of radius R is falling with its plane vertical in a horizontal magnetic induction B at the position MNQ shown in the figure.

Choices

Choice (4) Response
a.

BVR22 and M is at higher potential

b.

π RBV and Q is at higher potential

c.

Zero

d.

2RBV and Q is at higher potential

Question number: 10

» Electromagnetic Induction & Alternating Currents » Lenz's Law

MCQ▾

Question

Consider the arrangement shown in figure in which the north pole of a magnet is moved away from a thick conducting loop containing capacitor. Then excess positive charge will arrive on

Conducting loop containing capacitor

Conducting Loop Containing Capacitor

In figure a magnet is moved away from a thick conducting loop containing capacitor.

Choices

Choice (4) Response
a.

Neither a nor b plates

b.

Plate b

c.

plates a and b

d.

Plate a

Question number: 11

» Electromagnetic Induction & Alternating Currents » Electromagnetic Induction

MCQ▾

Question

At certain location in the northern hemisphere, the earth’s magnetic field has a magnitude of 42 μT and points down ward at 57° to vertical. The flux through a horizontal surface of area 2.5 m 2 will be- (Given cos 33° = 0.839, cos 57° = 0.545)

Choices

Choice (4) Response
a.

57 x 10 -6 Wb/m 2

b.

42 x 10 -6 Wb/m 2

c.

41 x 10 -6 Wb/m 2

d.

56 x 10 -6 Wb/m 2

Sign In