CHANDIGARH polytechnic college

Assignment no.1

Applied Physics 2 date of submission 19 January 2015

Q-1 What is electric charge? Is it a scalar or vector quantity? Name its SI units.

Q-2 What are positive and negative charges? What is the nature of charge on an electron in this convention?

Q-3 What do you mean by additive nature of electric charges?

Q-4 A uniformly charged conducting sphere of 2.4 meter diameter has a surface charge density 100µc/m2.Find the charge and flux linked with sphere?

Q-5 What do you mean by permittivity of a medium?

Q-6 Define electric field at a point. Is it a scalar or a vector quantity?

Q-7 Give the SI units and dimensions of electric field.

Q-8 Electric flux linked with a plane surface is maximum if the angle between the electric lines of force and area vector is

a) 0o b) 45o c) 90o d) 135o

Q-9 Why two electric lines of force never intersect each other?

Q-10 (a) Define electric flux. Give the SI units of electric flux?

(b) How is electric flux expressed in terms of surface integral of the electric field?

(c) Is electric flux a scalar or a vector?

(d) What is a Gaussian surface? Give its importance.