Home
Class 12
PHYSICS
Two wires of same radius having lengths ...

Two wires of same radius having lengths `l_1`and `l_2` and resistivities `rho_1` and `rho_2` are connected in series. The equivalent resistivity will be

Text Solution

Verified by Experts

The correct Answer is:
B
Promotional Banner

Similar Questions

Explore conceptually related problems

Two wire of same radius having lengths t_1 and t_2 and resistivities rho_1 and rho_2 are connected in series. The equivalent resistivity will be

R_1 and R_2 are two resistances they are connected in series Write down their equivalent resistance in each case.

There are n number of cells each of resistance R. When they are connected in parallel, the equivalent resistance is Y and when they are connected in series , the equivalent resistance is X. Find the relation between X,Y and R.

With two resistances 2 Omega and 3 Omega In parallel a third resistance of 4 Omega is connected in series.Find their equivalent resistance.

A uniform metal wire of resistance R is stretched to twice its length. Now this wire is halved and the two part are connected in parallel. The equivalent resistance is-

Two wires of same material have length L and L/2 and radius r and r/2 respectively. The ratio of their Young's modulus is

A uniform metal wire of resistance R is stretched to twice its length. Now this wire is halved, and the two halves are connected in parallel. The equivalent resistance is

A uniform copper wire of resistance R is halved and the two parts are connected in parallel .IF now the equivalent resistance is R' then what is the ratio of R to R'?

R_1 and R_2 are two resistances they are connected in parallel combinations Write down their equivalent resistance in each case.

A potentiometer wire has a length 10m and a resistance of 4 ohm. A cell of emf 2V and a resistance box are connected in series with it. Calculate the resistance to be introduced in the box, so as to get a potential gradient of 0.1Vm^-1 .