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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…
 
 
 
 

Question 1 of 10

2. The function of commutator or slip ring is to
 
 
 
 

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?

1
 
 
 
 

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

2
 
 
 
 

Question 4 of 10

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

Question 5 of 10

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

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:

3
 
 
 
 

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?

4
 
 
 
 

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.
 
 
 
 

Question 9 of 10

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

Question 10 of 10