Consider the energy density in a solenoid at its centre and that near its ends. Which of the two is greater?

Consider the self-inductance per unit length of a solenoid at its centre and that near its ends. Which of the two is greater?

The length of an iron wire is L and area of cross-section is A. The increase in length is l on applying the force F on its two ends. Which of the statement is correct?

Two particles of mass m each are attached to a light rod of length d, one at its centre and the other at a free end, The rod is fixed at the other end and is rotated in a plane at an angular speed omega . Calculate the angular momentum of the particle at the end with respect to the particle at the centre

An electron and proton are possessing the same amount of kinetic energy. Which of the two has greater wavelength?

What is Quiescent centre? Add a note its importance.

On the resistor if there is no coloured ring at its end then the tolerance is:

Compare the direction of the magnetic field inside a solenoid with that of the field there if the solenoid is replaced by its equivalent combination of north pole and south pole.

Two isolated metal spheres A & B have radii R & 2R respectively and same charge q. find which of the two spheres have greater energy density just outside the surface of the sphere.

We consider a thermodynamic system. If DeltaU represent the increase in the its energy and W the work done by the system, which of the following statements is true?