Magnetic Force, Class 10 Science NCERT Solutions

1. There will be total 10 MCQ in this test.
2. Please keep a pen and paper ready for rough work but keep your books away.
3. The test will consist of only objective type multiple choice questions requiring students to mouse-click their correct choice of the options against the related question number.
4. No negative marking for incorrect choice.
5. Please click on “Finish the Test” when you want to exit.
6. All the best – Happy Studying

1. If a charged particle does not experience any force in a magnetic field, then...

it is stationary.

it moves in the direction parallel to magnetic field

both (A) and (B)

it moves perpendicularly to the field.

Your comments:

Question 1 of 10

2. The function of commutator or slip ring is to

increase the current flowing through the coil

change the direction of current through coil

decrease the current flowing through the coil

change the direction of magnetic field

Your comments:

Question 2 of 10

3. As shown in the diagram, a wire carrying a current pointing out of the paper is placed in a magnetic field. Towards which of the following points does the wire move?

P

Q

S

R

Your comments:

Question 3 of 10

4. An electron enters a magnetic field at right angles to it, as shown in figure. The direction of force acting on the electron will

into the screen

to the right

out of the screen

to the left

Your comments:

Question 4 of 10

5. Which of the following property of a proton can change while it moves freely in magnetic field?

mass

inertia

size

velocity

Your comments:

Question 5 of 10

6. A beam of alpha particles enters a chamber moving along the magnetic field. The force acting on them is

Maximum and perpendicular to the magnetic field

Maximum and along the magnetic field

Minimum and perpendicular to the magnetic field

Zero

Your comments:

Question 6 of 10

7. A uniform magnetic field exists in the plane of paper pointing from left to right as shown in figure. In the field, an electron and a proton move as shown. The electron and the proton experience:

force pointing out of the plane of paper.

force pointing opposite and along the direction of the uniform magnetic field respectively.

force pointing into the plane of paper.

force pointing into the plane of paper and out of the plane of paper, respectively.

Your comments:

Question 7 of 10

8. A fixed wire AB carries current I. An electron is moving parallel to the wire. In which direction does the electron tend to move?

towards west

downwards

towards east

upwards

Your comments:

Question 8 of 10

9. Which of the following concerning a d.c. motor is correct?
(1) It converts electrical energy to mechanical energy.
(2) The commutator rotates together with the coil in the magnetic field.

(1) only

(2) only

(1) and (2) both

Both are incorrect

Your comments:

Question 9 of 10

10. When the direction of current through the conductor is reversed, then direction of

force is also reversed

force remains same

electromagnetic field is reversed

electric field is also reversed

Your comments:

Question 10 of 10

 Loading...