what is wattless current?

construction and working of moving coil galvanometer

 what is differentiation and integration and where do we use them ?

What is Ohm's law in vector form.........???

what is the dimensional formulas of mutual inductance.

project onto study various factors on which the internal resistance/emf of a cell depends.

Explain Mod-3 Counter with circuit diagram and truth table.

why are alloys manganin constantan used to make standard resistance coil?

 investigatory project on full wave rectifier. how to do?

derive the dimensional formula of magnetic flux with each steps clearly???

 What is quantisation of charge?

difference between uniform and non-uniform electric fields.... plzz if possible draw diagrams too..!

what is the principle of moving coil galvanometer?

A projectile is thrown with a velocity vat an angle a with horizontal. When the projectile is at a height equal to half of the maximum height, the vertical component of the velocity of projectile is

1. v sin a * 3
2. vsin a / 3
3. vsin a / root 2

a body of mass m accelerates uniformly from rest to velocity v1 in time interval T1 . the instantaneous power delivered to the body as a funcyion of time t iis.

1) mv1² t/T1²

2) mv1 t/T1²

3) (mv1)2 t/t1²

4) mv1² t² /T1