Electromagnetic Induction & Alternating Currents-Induced EMF and Current (AIIMS Physics): Questions 1 - 3 of 10

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Question number: 1

» Electromagnetic Induction & Alternating Currents » Induced EMF and Current

Appeared in Year: 1997

MCQ▾

Question

A coil of copper having 1000 turns is placed in a magnetic field Equation perpendicular to its plane. The cross sectional area of the coil is 0.05 m2. If it turns through 180° in 0.01 sec, then the induced emf in the coil is – [AIIMS]

Choices

Choice (4) Response

a.

0.2 V

b.

4 V

c.

40 V

d.

0.4 V

Question number: 2

» Electromagnetic Induction & Alternating Currents » Induced EMF and Current

Appeared in Year: 2005

MCQ▾

Question

A conducting ring of radius 1 meter is placed in a uniform magnetic field B of 0.01 T, oscillating with frequency 100 Hz with its plane at right angles to magnetic field. What will be the induced electric field? [AIIMS]

Choices

Choice (4) Response

a.

Equation

b.

Equation

c.

Equation

d.

Equation

Question number: 3

» Electromagnetic Induction & Alternating Currents » Induced EMF and Current

Appeared in Year: 2005

MCQ▾

Question

A magnet is made to oscillate with a particular frequency, passing through a coil as shown in figure. The time variation of the magnitude of emf generated across the coil during one cycle is – [AIIMS]

A magnet oscillate through a coil

A Magnet Oscillate Through a Coil

In figure a magnet is made to oscillate with a particular frequency, passing through a coil.

Choices

Choice (4) Response

a.

Graph of emf verses time (Choice-A)

Graph of Emf Verses Time (Choice-A)

Figure shows the time variation of the magnitude of emf generated across the coil during one cycle.

b.

Graph of emf verses time (Choice-B)

Graph of Emf Verses Time (Choice-B)

Figure shows the time variation of the magnitude of emf generated across the coil during one cycle.

c.

Graph of emf verses time (Choice-C)

Graph of Emf Verses Time (Choice-C)

Figure shows the time variation of the magnitude of emf generated across the coil during one cycle.

d.

 Graph of emf verses time (Choice-D)

Graph of Emf Verses Time (Choice-D)

Figure shows the time variation of the magnitude of emf generated across the coil during one cycle.

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