Magnetic Effects of Current and Magnetism-Ampere's Law (AIIMS Physics): Questions 1 - 2 of 2

Get 1 year subscription: Access detailed explanations (illustrated with images and videos) to 500 questions. Access all new questions we will add tracking exam-pattern and syllabus changes. View Sample Explanation or View Features.

Rs. 350.00 or

Question number: 1

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

MCQ▾

Question

A long straight wire (radius=5.0mm) carries a constant current distributed uniformly over a cross section perpendicular to the axis of the wire. If the current density is 200Am2 . The magnitudes of the magnetic field at

(a) 3.0 mm from the axis of the wire and

(b) 6.0 mm from the axis of the wire is: -

Choices

Choice (4) Response

a.

12π×108T,5π3×107T

b.

6π×108T,3π2×107T

c.

π×108T,π2×108T

d.

π×104T,5π2×107T

Question number: 2

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

MCQ▾

Question

A current of 3A flows through two long parallel wires. The magnetic force on each wire is 1×103Nm. If their currents makes doubled and separation between them makes 14th of initial value then magnetic force per unit length of each wire becomes –

Choices

Choice (4) Response

a.

16×103Nm

b.

8×103Nm

c.

32×103Nm

d.

4×103Nm

Sign In