# 72 - Electricity Questions Answers

Joshi sir comment

All options are dimensionally incorrect. Please rectify.

Derive the expression or show that:Path independence of line integral of electrostatic field,, conservative nature of electrostatic force.

Joshi sir comment

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Joshi sir comment
Joshi sir comment
Joshi sir comment

Find potential energy of disc having charge density sigma uniformly distributed on its surface,radius R

Joshi sir comment

Let potential of a disc of radius x is V. For this, see video given below

Now potential energy of this disc with a circular layer of charge