.What is meant by root mean square value of alternating current? Derive an expression of r .m.s value of A.C

Define average value of alternating current . Derive an expression for it .

The root mean square value of the alternating current is equal to

The r.m.s. value of an alternating current is

Define root mean square value of alternating current and derive an expression for it . How is it related to mean value of alternating current ?

The root mean square r.m.s.value of alternating current I=60sin100 pi t is

The root mean square rm.s. value of alternating current I=60sin100nt is

The root mean square (r.m.s .) value of alternating current I=60sin100 pi(t) is

What is meant by mean free path of a gas molecule ? Derive an expression for it .

What is the root mean square value of current of effective current of an a.c. having a peak value of 5.0 amp? What will be the reading shown for this current by (i) an a.c. ammeter (ii) an ordinary moving coil ammeter ?

The ratio of peak value and r.m.s value of an alternating current is