# Electromagnetic Induction & Alternating Currents (BITSAT Physics): Questions 1 - 6 of 17

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## Question number: 1

» Electromagnetic Induction & Alternating Currents » Induced EMF and Current

MCQ▾

### Question

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.

## Question number: 2

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

MCQ▾

### Question

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

### Choices

Choice (4) Response

a.

b.

c.

d.

## 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 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.

## 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 and . The total potential different across the circuit is –

### Choices

Choice (4) Response

a.

b.

c.

d.

## Question number: 6

» Electromagnetic Induction & Alternating Currents » Lenz's Law

MCQ▾

### Question

Which law follows the law of conservation of energy?

### Choices

Choice (4) Response

a.

Lenz’s law

b.

Ampere’s law

c.

Maxwell’s law

d.

Kirchhoff’s law

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