# Magnetic Effects of Current and Magnetism-Ampere's Law (NEET (NTA)-National Eligibility cum Entrance Test (Medical) Physics): Questions 1 - 3 of 10

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## Question number: 1

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

Edit
MCQ▾

### Question

A current is flowing through a conducting hollow pipe whose area of cross-section is shown in the fig. The value of magnetic induction will be zero at-

### Choices

Choice (4)Response

a.

Point Q but not at P and R

b.

Point P but not at Q and R

c.

Point P, Q and R

d.

Point R but not at P and Q

## Question number: 2

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

Edit
Assertion-Reason▾

### Assertion (Ꭺ)

If two long wires, hanging freely are connected to a battery in series, they come closer to each other.

### Reason (Ꭱ)

Force of repulsion acts between the two wires carrying current.

### Choices

Choice (4)Response

a.

Ꭺ is false but Ꭱ is true

b.

Both Ꭺ and Ꭱ are false

c.

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

d.

Ꭺ is true but Ꭱ is false

## Question number: 3

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

Edit
MCQ▾

### Question

Two long straight parallel wires carry currents I 1 and I 2 respectively, in the same direction (as shown). The distance between the wires is R. The magnetic field at the center of the two wires (At point P) will be-

(1) into the plane of paper (if I 1 > I 2)

(2) out of the plane of paper (if I 2 > I 1)

(3) out of the plane of paper (if I 2 > I 1)

(4) into the plane of paper (if I 1 > I 2)

Select the correct answers and mark it according to the following codes:

### Choices

Choice (4)Response

a.

1,2 and 3 are correct

b.

1 and 2 are correct

c.

2 and 4 are correct

d.

1 and 3 are correct

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