# Physics-Magnetism & Electricity at Work (NTSE Stage-1 (State-Level) Scholastic-Aptitude & Language Comprehension): Questions 30 - 34 of 47

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## Question number: 30

» Physics » Magnetism & Electricity at Work

MCQ▾

### Question

Three equal resistors each equal to “r” are connected as shown in figure. The equivalent resistance between points A and B is

### Choices

Choice (4) Response

a.

b.

r

c.

3r

d.

r

## Question number: 31

» Physics » Magnetism & Electricity at Work

Assertion-Reason▾

### Assertion (Ꭺ)

Net torque in the current carrying loop placed in a uniform magnetic field (pointing inwards) is zero.

### Reason (Ꭱ)

Magnetic moment (m) is inwards.

### Choices

Choice (4) Response

a.

Both Ꭺ and Ꭱ are true but Ꭱ is NOT the correct explanation of Ꭺ

b.

Both Ꭺ and Ꭱ are true and Ꭱ is the correct explanation of Ꭺ

c.

Both Ꭺ and Ꭱ are false

d.

Ꭺ is false but Ꭱ is true

## Question number: 32

» Physics » Magnetism & Electricity at Work

MCQ▾

### Question

The freezer in a refrigerator is located at the top section so that

### Choices

Choice (4) Response

a.

The heat gained from the environment is high

b.

The motor is not heated

c.

The entire chamber of the refrigerator is cooled quickly due to convection

d.

The heat gained from the environment is low

## Question number: 33

» Physics » Magnetism & Electricity at Work

MCQ▾

### Question

If an electric current is passed through nerve of a man, then man

### Choices

Choice (4) Response

a.

Is excited

b.

Begins to weep

c.

Becomes insensitive to pain

d.

Begins to laugh

## Question number: 34

» Physics » Magnetism & Electricity at Work

MCQ▾

### Question

The permanent magnet is made from which one of the following substances?

### Choices

Choice (4) Response

a.

Ferromagnetic

b.

Paramagnetic

c.

Diamagnetic

d.

Electromagnetic

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