Magnetic Effects of Current and Magnetism (NEET Physics): Questions 1 - 3 of 155

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Question number: 1

» Magnetic Effects of Current and Magnetism » Electric Charge Moving in Magnetic Field

MCQ▾

Question

In the figure the two parallel wires PQ and ST are at 30 cm apart. The currents flowing in the wires are according to figure. The force acting over a length of 5m of the wires is-

Two parallel current carrying wires

Two Parallel Current Carrying Wires

In the figure the two parallel wires PQ and ST are at 30 cm apart. In PQ wire, current of 10 A is flowing and in ST wire, current of 15A is flowing.

(1) 5 x 10 -4 N (2) attraction

(3) 5 x 10 -8 N (4) repulsion

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

Choices

Choice (4) Response

a.

1 and 3 are correct

b.

1 and 2 are correct

c.

1, 2 and 3 are correct

d.

2 and 4 are correct

Question number: 2

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

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

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, Q and R

c.

Point R but not at P and Q

d.

Point P but not at Q and R

Question number: 3

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

MCQ▾

Question

For an isotropic medium B, µ 0, H and M are related as (where B, μ 0, H and M have their usual meaning in the context of magnetic material)

Choices

Choice (4) Response

a.

Equation

b.

Equation

c.

Equation

d.

Equation

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