A potential barrier of 0.3 V exists across a P-N junction: If the depletion region is `3 xx10^(-7)` m wide , what is the intensity of the electric field in this region?

A potential barrier of 0.3 V exists across a P-N junction: If an electron with speed 4 xx 10^(5) ms^(-1) approaches this P-N junction from the N-side, the find the speed with which it will enter the P-side. Given mass of electron 9.1 xx10^(-31) kg

In a certain 0.1 m^3 of space, electric potential is found to be 5 V throughout. What is the electric field in this region?

The electric field at a point on the axial line at a distance of 10 cm from te centre of an electric dipole is 3.75 xx 10^5NC^-1 in air, while at a distance of 20 cm, the electric field is 3xx10^4NC^-1 . Calculate the length of the electric dipole.

A potential difference of 5 V is applied across a conductor of length 0.1 m. If drift velocity of electrons is 2.5 xx 10^-4 ms^-1 , calculate the electron mobility.

What do you mean by depletion region in a p-n junction ?