Question 1-4 of 181: Magnetic Effects of Current and Magnetism | MHT-CET (Maharashtra Common Entrance Test) Physics | Includes PYQs | Get Solutions with Detailed Explanations

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Question 1 (1 of 1 Based on Passage)

Magnetic Effects of Current and MagnetismCurrent Loop as Magnetic Dipole

Passage

Read the passage given below and answer the questions that follow:

A conducting wire is bent into a loop as shown in the figure. The segment AOB is parabolic given by the equation y² = 2x while segment BA is a straight line parallel to the y-axis.

The magnetic field in the region is B and the current in the wire is 2A.

Electric current carrying loop segment AOB

MCQ

Read the question, then carefully choose the correct answer(s).

The torque on the loop will be

Choices

Choice (4)		Response
a.	$18 \sqrt{2} N m$
b.	16 Nm
c.	$16 \sqrt{2} N m$
d.	Zero

Question 2

Magnetic Effects of Current and MagnetismMoving Coil Galvanometer

MCQ

Read the question, then carefully choose the correct answer(s).

What is the shape of magnet in moving coil galvanometer to make the radial magnetic field?

Choices

Choice (4)		Response
a.	Convex cylindrical
b.	Concave cylindrical
c.	Horse shoe magnet
d.	None

Question 3 (1 of 1 Based on Passage)

Magnetic Effects of Current and MagnetismElectromagnets and Permanent Magnets

Passage

Read the passage given below and answer the questions that follows:

A charge particles q enters in a magnetic field $B = y \hat{𝚤} + x \hat{𝚥}$ with the velocity $v = x \hat{𝚤} + y \hat{𝚥}$ . Neglect any force other than magnetic force. Now answer the following question.

MCQ

Read the question, then carefully choose the correct answer(s).

Magnetic force F acting on charge is proportional to –

Choices

Choice (4)		Response
a.	$F \propto \sqrt{x^{2} + y^{2}}$
b.	$F \propto (x^{2} + y^{2})$
c.	F does not depend on x or y co-ordinate
d.	$F \propto (x^{2} - y^{2})$

Question 4

Magnetic Effects of Current and MagnetismAmpere's Law

MCQ

Read the question, then carefully choose the correct answer(s).

An air-solenoid has 500 turns of wire in its 40 cm length. If the current in the wire be 1.0 ampere then the magnetic field on the axis inside the solenoid is –

Choices

Choice (4)		Response
a.	0.157 gauss
b.	15.7 gauss
c.	0.0157 gauss
d.	1.57 gauss