Home
Class 12
PHYSICS
An electric field us applied to a semico...

An electric field us applied to a semiconductor.Let the number of charge carriers be n and the average drift speed be v.If the temperature is increased,

A

both n and v will increase

B

n will increase and v will decrease

C

both n and v will decrease

D

n will decrease and will increase

Text Solution

Verified by Experts

The correct Answer is:
B
Promotional Banner

Similar Questions

Explore conceptually related problems

When an electric field is applied across a semiconductor,

When an electric field is applied across a semiconductor,

When an electric field is applied across a semiconductor,

When electric field is applied inside a conductor then free electron are accelerated. Their average velocity in time interval t is proportional to

Statement I: If an electric field is applied to a metallic conductor, the free electrons experience a force but do not accelerate, they only drift at a constant speed. Statement II: The force exerted by the electric field is completely balanced by the Coulomb force between electrons and protons .

A charged bead is capable of sliding freely through a string held vertically in tension. An electric field is applied parallel to the string so that the bead stays at rest of the middle of the string. If the electric field is switched off momentarily and switched on

A constant potential difference is applied across a metal wire. Let the average thermal velocity of electrons in the wire be v_t and let the drift velocity be v_d . As the temperature of the wire rises:

Assertion: A point charge is brought in an electric field. The field at a nearby point will increase, whatever be the nature of the charge. Reason: The electric field is independent of the nature of charge.

Can a charged particle be accelerated by a magnetic field. Can its speed be increased?

Can a charged particle be accelerated by a magnetic field? Can its speed be increased?