# Magnetic Effects of Current and Magnetism (NEET (National Eligibility cum Medical Entrance Test) Physics): Questions 132 - 137 of 155

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## Question number: 132

» Magnetic Effects of Current and Magnetism » Bar Magnet

MCQ▾

### Question

Calculate magnetic induction at a distance of 20 cm from a pole of strength 40 Am in air.

### Choices

Choice (4) Response

a.

b.

c.

d.

## Question number: 133

» Magnetic Effects of Current and Magnetism » Hysteresis

MCQ▾

### Question

The use of study of hysteresis curve for a given material is to estimate the

### Choices

Choice (4) Response

a.

Current loss

b.

Voltage loss

c.

hysteresis loss

d.

all

## Question number: 134

» Magnetic Effects of Current and Magnetism » Para, Dia and Ferro-Magnetic Substances

MCQ▾

### Question

Susceptibility of ferromagnetic substance is

### Choices

Choice (4) Response

a.

1

b.

> 1

c.

0

d.

< 1

## Question number: 135

» Magnetic Effects of Current and Magnetism » Magnetic Susceptibility and Permeability

MCQ▾

### Question

The relative permeability is represented by and the susceptibility is denoted by for a magnetic substance. Then for a paramagnetic substance

### Choices

Choice (4) Response

a.

b.

c.

d.

## Question number: 136

» Magnetic Effects of Current and Magnetism » Ampere's Law

MCQ▾

### Question

charge moves in magnetic field B with velocity v making an angle θ with B. The force on the charge will be maximum if,

### Choices

Choice (4) Response

a.

b.

c.

d.

## Question number: 137

» Magnetic Effects of Current and Magnetism » Earth's Magnetic Field

Assertion-Reason▾

### Assertion (Ꭺ)

If an electron, while coming vertically from outer space, enters the earth’s magnetic field, it is deflected towards west.

### Reason (Ꭱ)

Electron has negative charge.

### Choices

Choice (4) Response

a.

Ꭺ is true but Ꭱ is false

b.

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

c.

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

d.

Ꭺ is false but Ꭱ is true

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