Why the pipes carrying steam should have loops?

Give any two reasons why the patent on Basamati should not have gone to an American Company.

The wires carrying current in homes have a coating of PVC. Why?

A square current carrying loop is suspended in a uniform magnetic field acting perpendicular to the plane of the loop. If the force on one arm of the loop is vec(F) , the net force on the remaining three arms of the loop is

Why the fuse wire should have high resistance and low melting point?

Explain why Water with detergent disolved in it should have small angles of contact.

A square-shpaed current carrying loop MNOP is placed near a straight long current carrying wire AB as shown in the figure. The wire and the loop lie in the same plane. If the loop experineces a net force F towards the wire. Find the magnitude of the force on the side 'NO' of the loop.