# 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- Conducting Hollow Pipe with Points R, P and Q A current is flowing through a conducting hollow pipe whose area of cross-section is shown in figure.

### 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- Two Long Straight Parallel Wires Carry Currents I1 and I2 Two long straight parallel wires carry currents I1 and I2 respectively, in same direction. The distance between the wires is R.

(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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