Electromagnetic Induction & Alternating Currents-Induced EMF and Current (AIIMS Physics): Questions 8 - 10 of 10

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Question number: 8

» Electromagnetic Induction & Alternating Currents » Induced EMF and Current

Appeared in Year: 1995

MCQ▾

Question

Dimension of a rectangular coil is 20cm×10cm . Number of turns in coil is 60. It is rotating about its one of the diameter in an uniform magnetic field of 0.5T , with the speed 1800 r. p. m. the maximum induced emf is – [RPMT]

Choices

Choice (4) Response

a.

118V

b.

98V

c.

100V

d.

113 V

Question number: 9

» Electromagnetic Induction & Alternating Currents » Induced EMF and Current

Appeared in Year: 1998

MCQ▾

Question

Two coil have a mutual inductance 0.005H . The current changes in first coil according to equation I=I0sinωt , where I0=2A and ω=100πrads . The maximum value of induced emf in second coil is – (AIPMT)

Choices

Choice (4) Response

a.

πV

b.

4πV

c.

3πV

d.

2πV

Question number: 10

» Electromagnetic Induction & Alternating Currents » Induced EMF and Current

MCQ▾

Question

The magnetic flux linked with a coil varies with time, given as, ϕ=(3t2+2t+6)weber . The induced emf at 2 sec is –

Choices

Choice (4) Response

a.

14V

b.

6V

c.

12V

d.

11V

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