Question

obtain an expression for acceleration of an electron in a current carrying conductor ?​

Answer 1

Derive an expression for the acceleration of an electron in a current carrying conductor. m =mass of the electron. (1 mark) 6. Obtain an expression for the mobility of electron ( )μ in terms of relaxation time( )τ .

Answer 2

Answer:

Electrons accelerate and gain velocity in a direction opposite to the field. Soon electrons will pile up on the surface on one side of the conductor, while the surface on the other side will be depleted of electrons and have a net positive charge.

Explanation:

can define current density as the total amount of current passing through a unit cross-sectional conductor in unit time. From drift velocity, we know the formula for drift velocity as:

I = nAvQ

J = I/A = nVQ

Where,

J is the current density measured in Amperes per square meter

v is the drift velocity of the electrons

Thun, we can say that drift velocity of the electrons and its current density is directly proportional to each other. Also, when the electric field intensity increases, the drift velocity increases, and the current flowing through the conductor also increases.