# 74 - Electricity Questions Answers

Joshi sir comment

Sir, in the formula for current , in the ncert it first talks about steady state current. Then it writes i=q/t. but then it generalises and writes the formual i=(delta)q/(delta)t

sir my doubt is that how do we define flow of charge in steady state across a cross section. and why is there (delta)q in formula since the charge is not changing with time.

is it the amount of charge passing per unit time or the change in charge per unit time?

pls help

Joshi sir comment

It is the amount of charge passing through a particular cross section of wire in unit time

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