help@askiitians.com

1800-150-456-789

Electric Current> A current passes through a wire of non un...

question mark

A current passes through a wire of non uniform cross section. which of the following quantities are independent of the cross section? (a) charge crossing in a given time interval (b) drift speed (c) current density (d) free electron density also give the reason as to why each option is right or wrong.

vaanya , 11 Years ago

Grade 12

1 Answers

Nirmal Singh.

Last Activity: 11 Years ago

Its is independent of free electron density.
because we know that
J = I /A = neVd
Where J = current density,
A = cross section area
n = no. of electrons
e = charge of electrons
ne = charge crossing in a given time interval
Vd = drift velocity
Thanks & Regards,
Nirmal Singh
Askiitians Faculty

LIVE ONLINE CLASSES

Prepraring for the competition made easy just by live online class.

Full Live Access

Study Material

Live Doubts Solving

Daily Class Assignments

The fig. Shows a network of resistance in which the point A is earthed

electric current

0 Answer Available

Last Activity: 2 Years ago

When a p.d of 2v is applied across a resistor, 10j of energy are covered. What charge flows through the resistor?

electric current

0 Answer Available

Last Activity: 2 Years ago

Please provide it's solution. In video form
Find the equivalent resistance of the given figure

electric current

0 Answer Available

Last Activity: 3 Years ago

The resistivity of material is 10 ohm m at 30 C when the temperature drops to 28 then the resistivity drops by 2. The temperature coefficient of resistivity of material is

electric current

0 Answer Available

Last Activity: 3 Years ago

Three cells of 2.0v each and internal resistance of 1.0 each are connected in series and in parallel calculate the new emf and new internal resistance in each connection

electric current

0 Answer Available

Last Activity: 3 Years ago

View all Questions