The wire does not breaks the ice slab while passing through it.Why?

A rod of mass M and length l is suspended freely from its end and it can oscillate in the vertical plane about the point of suspension. It is pulled to one side and then released. It passes through the equilibrium position with angular speed omega . What is the kinetic energy while passing through the mean position?

In a certain arrangement, a proton does not get deflected while passing through a magnetic field region.Under what condition is it possible?

A potentiometer has uniform potential gradient. The specific resistance of the material of the potentiometer wire is 10^(-7) ohm-metre and the current passing through it is 0.1 ampere, cross-section of the wire is 10^(-6)" m"^(2) . The potential gradient along the potentiometer wire is

You must have seen chandeliers having glass prism. The light from a tungsten bulb gets dispersed while passing through these prisms and we see coloured spectrum. If we use on LED light instead of tungsten bulb, will we be able to see the same effect?

The resistance of wire is 25 ohm due to electric current passing through it,6.25 J/sec heat is generated in the wire .Fire the potential difference

A stiff semi-circular wire of radius R is rotated in a uniform magnetic field B about an axis passing through its ends. If the frequency of rotation of wire be f, calculate the amplitude of alternating emf induced in the wire.

A ray of light is inciden rormally on a glass slab of refractive index mu of thckness 'd' which is at a distance x from the glass. The ray of light takes same time to reach from source to slab and to reach from sorce to slab and to pass through the slab. The thickness of the slab is

A wire carries a current of 0.3 A. Calculate the charge passing through the cross section of the wire in two minutes.

A current of 0.2 A passes through a metal wire for 20 seconds. Calculate the number of electrons passing through the cross section of the wire during this time. (The charge on an electron = 1.6 times 10^(-19) C)