Home
Class 12
PHYSICS
Two wires of the same dimensions but res...

Two wires of the same dimensions but resistivities `rho_(1)` and `rho_(2)` are connected in series. The equivalent resistivity of the combination is

A

`rho_(1) + rho_(2)`

B

`(rho_(1) + rho_(2))/2`

C

`sqrt(rho_(1).rho_(2))`

D

`2(rho_(1) + rho_(2))`

Text Solution

Verified by Experts

The correct Answer is:
B
`R_(eq) = R_(1) + R_(2) rArr rho(2l)/A = (rho_(1)l)/A + (rho_(2)l)/A rArr rho = (rho_(1)+ rho_(2))/2`
Promotional Banner

Similar Questions

Explore conceptually related problems

Two wires of same dimension but resistivities rho_1 and rho_2 are connected in series. The equivalent resistivity of the combination is

Two wires of same dimension but resistivity p_(1) and p_(2) are connected in series. The equivalent resistivity of the combination is

The wires is of same dimension but resistivities rho_1 and rho_2 are connected in parallel . The equivalent resistivity of the combination is

n conducting wires of same dimensions but having resistivities 1,2,3,….n are connected is series. The equivalent resistivity of the combination is

The equivalent resistance in series combination is

Two wires of same radius having lengths l_(1)andl_(2) and resistivities rho_(1)andrho_(2) are connected in series. The equivalent resistivity will be

Two wires of equal diameters of resistivies rho_(1) and rho_(2) and lengths l and l respectively are joined in series. The equivalent resistivity of the combination is