BARC-2018 EE: EMFT Nuclear Quiz 3

which of the following are the examples of non-polar dielectrics?

What is the total flux in a coil of having magnetic flux density 12 units and area 7 units?

Hard magnetic materials have large hysteresis loss due to which of the following reasons?

Find the energy stored in a system for four identical charges Q = 3 nc at the corners 2 m on a side.

Given the magnetic vector potential wb/m. What will be the total magnetic flux crossing the surface , , .