# Physics-Magnetism & Electricity at Work (NTSE Stage-1 (State-Level) Scholastic-Aptitude & Language Comprehension): Questions 1 - 5 of 47

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## Question number: 1

» Physics » Magnetism & Electricity at Work

MCQ▾

### Question

There are two electric bulbs of 40 W and 100 W. Which one will be brighter when first connected in series and then in parallel?

### Choices

Choice (4) Response

a.

40 W in series and 100 W in parallel

b.

100 W in series and 40 W in parallel

c.

40 W both in series and parallel will be uniform

d.

100 W both in series and parallel will be uniform

## Question number: 2

» Physics » Magnetism & Electricity at Work

MCQ▾

### Question

A permanent magnet

### Choices

Choice (4) Response

a.

attracts magnetic substances and repels all non-magnetic substances

b.

attracts all substances

c.

attracts only magnetic substances

d.

attracts non-magnetic substances and repels magnetic substances

## Question number: 3

» Physics » Magnetism & Electricity at Work

MCQ▾

### Question

If in the circuit, power dissipation is 150 W, then R is

### Choices

Choice (4) Response

a.

4 Ω

b.

6 Ω

c.

5 Ω

d.

None of the above

## Question number: 4

» Physics » Magnetism & Electricity at Work

MCQ▾

### Question

On applying an external magnetic field to a ferromagnetic substance domains

### Choices

Choice (4) Response

a.

align in the direction opposite to magnetic field

b.

remains unaffected

c.

align in the direction of magnetic field

d.

All of the above

## Question number: 5

» Physics » Magnetism & Electricity at Work

MCQ▾

### Question

A current of 0.5 A is drawn by a filament of an electric bulb for half an hour. What is the amount of electric charge that flows through the circuit?

### Choices

Choice (4) Response

a.

900°C

b.

9°C

c.

5°C

d.

600°C