CBSE Class 12 Physics Chapter-4 Important Questions – Free PDF Download
Free PDF download of Important Questions with Answers for CBSE Class 12 Physics Chapter 4 – Moving Charges and Magnetism 1 Mark Questions prepared by expert Physics teachers from latest edition of CBSE(NCERT) books only by CoolGyan to score more marks in CBSE board examination.
CBSE Class 12 Physics Chapter-4 Important Questions
CBSE Class 12 Physics Important Questions Chapter 4 – Moving Charges and Magnetism
1 Mark Questions
1. State two properties of the material of the wire used for suspension of the coil in a moving coil galvanometer?
Ans. (a) Non-Brittle conductor
(b) Restoring Torque per unit Twist should be small.
2. What will be the path of a charged particle moving along the direction of a uniform magnetic field?
Ans. The path of a charged particle will be a straight line path as no force acts on the particle.
3. Two wires of equal lengths are bent in the form of two loops. One of the loop is square shaped whereas the other loop is circular. These are suspended in a uniform magnetic field and the same current is passed through them. Which loop will experience greater torque? Give reasons?
Ans. since 
Since Area of – circular loops is more Than of a square loop
Torque experienced by a circular loop is greater.
4. A cyclotron is not suitable to accelerate electron. Why?
Ans. A cyclotron is not suitable to accelerate electron because its mass is less due to which they gain speed and step out of the dee immediately.
