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» CBSE Physics Magnetic Effects of Current Expected Questions : Unit IV : CBSE Sample Question Papers

CBSE Physics Magnetic Effects of Current Expected Questions : Unit IV

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Very Short Answer Type Question

Q. 1. An electron is not deflected which moving through a certain region of space. Can you be sure that there is no magnetic field in the region ?
Answer :

Q. 2. An electron is moving along X-axis in a magnetic field acting along Y-axis. What is the direction of magnetic field acting on it ?
Answer :

Q. 3. What is the value of permeability of free space ?
Answer :

Q. 4. What is the direction of force between two parallel conductors carrying current in (i) same direction ; (ii) opposite direction ?
Answer :

Q. 5. In F — q v x B, which pair of vectors are always at right angles to each other ?
Answer :

Q. 6. What is S.I. unit of magnetic induction ?
Answer :

Q. 7. A positive charge is moving vertically upward when it enters a magnetic field directed to the earth. What is the direction of force on the charge ?
Answer :

Q. 8. What is the work done by a magnetic field on a moving charge ?
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Q. 9. Which of the following are vectors (i) charge (ii) magnetic induction (iii) magnetic dipole moment (iv) current ?
Answer :

Q. 10. Can a static magnetic field charge the momentum of a moving particle ?
Answer :

Q. 11. Does the torque acting on a loop carrying current in a magnetic field depend upon the shape of the loop ?
Answer :

Q. 12. What are Lorentz force ?
Answer :

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