A current of 10 ampere passes through a wire having cross-sectional area `1mm^2`. The number of free electron peer `1m^3` of the conductor is `10^(28)`. Find the drift velocity of electron.

A silver wire of 1 mm diameter has a charge of 90 coulombs flowing in 1 hours and 15 minutes. Silver contains 5.28*10^28 free electrons per cm^3. Find the current in the wire and drift velocity in the electron?

Water flows through a pipe of varying cross-section. If the velocity of flow is 0.24 m/s at a cross- section of 5 cm^2 , what will beits velocity at a cross-section of 10 cm^2 ?

A elongation of 0.1% in a wire of cross-sectional area 10"6 m2 causes tension 100 N. The young’s modulus is

A long straight wire carries a current of 10 ampere. An electron travels with a velocity of 5.0x10 ms parallel to the wire at 0.1 m from it and in a direction opposite to the current. What force is exerted on the electron ?.

A potential difference of 5 V is applied across a conductor of length 10 cm. If drift velocity of the electron is 2.5 x 10^-4 ms^-1 find the mobility of electron.

Water is flowing steadily through a horizontal pipe of non- uniform cross-section. The pressure of water is 4xx10^4 at a point, where cross-section is 0.02m^2 and velocity of flow is 2ms^-1 . What is the pressure at a point, where cross-section reduces to 0.01m^2 ?