CBSE Class 12 Physics Chapter-1 Important Questions – Free PDF Download

Free PDF download of Important Questions with Answers for CBSE Class 12 Physics Chapter 1 – Electric Charges and Fields 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-1 Important Questions

CBSE Class 12 Physics Important Questions Chapter 1 – Electric Charges and Fields

1 Mark Questions

1. Show does the force between two point charges change if the dielectric constant of the medium in which they are kept increase?
Ans. Since K
= 

if k increases, Fm decreases.

2. A charged rod P attracts rod R where as P repels another charged rod Q. What type of force is developed between Q and R?
Ans. Suppose rod P be negatively charged since it attracts rod R
 R is positively charged since it repels rod Q
 Q is negatively charged. So force between Q and R is attractive in nature.

3. Which physical quantity has its S.I unit (1) Cm (2) N/C
Ans. (1) Electric dipole moment  (2) Electric field Intensity

4. Define one coulomb?
Ans. Charge on a body is said to be 1 coulomb if two charges experiences a force of repulsion or attraction of when they are separated by a distance of 1 m.