Electromagnetic Induction — Physics STD 12 Science — Question

Two circular loops are placed with their centres separated by a fixed distance. How would you orient the loops to have:

1. The largest mutual inductance.
2. The smallest mutual inductance?

If length, number of turns and current flowing through a solenoid are made doubled, then how many times will magnetic field becomes?

Write the relation between threshold frequency and work function.

Answer the following question:
When a low flying aircraft passes overhead, we sometimes notice a slight shaking of the picture on our TV screen. Suggest a possible explanation.

The acceleration of a particle is zero as measured from an inertial frame of reference. Can we conclude that no force acts on the particle?

Consider a gas of neutrons. Do you expect it to behave much better as an ideal gas as compared to hydrogen gas at the same pressure and temperature?

When a forward bias is applied to a p-n junction, it

1. Raises the potential barrier.
2. Reduces the majority carrier current to zero.
3. Lowers the potential barrier.
4. None of the above.

Two electrons are kept at a distance of I A from cach other. Calculate the Coulomb force between them.

Is a vector necessarily changed if it is rotated through an angle?