The electric force per unit charge is called electric field of an object. It can be also defined as the space surrounded by a charged particle. The mathematical definition of electric field is given by :
Where
Electric force = F
Charge = q
Electric field = E
So, electric field is represented by a symbol E. Hence, the correct option is (b).
When primary coil is exited by sin wave,this will result in sin wave in secondary coil as well.According to law,flux induced in the secondary coil will have same waveform as in the primary coil.
Since the door that leads to the room is opened, this gives room for particles to move into the next identical room and divided into octants. Now the amount of space that can be occupied becomes double, the number of basic states has increased by 404916