Derive an expression for force between two parallel currents.

Correct the following statements if required changing the underlined portion. There exists no force between parallel currents.

Derive an expression for decay constant.

Derive an expression for 1st order reaction.

Write 'Yes' for correct statements and 'No' for incorrect statements. There exists no force between parallel currents.

Derive an expression for self inductance

Derive an expression for rms value of ac.