Home
Class 12
PHYSICS
A cell sends a current through a resist...

A cell sends a current through a resistance `R_(1)` for time `t`, next the same cell sends current through another resistance `R_(2)` for the time `t` If the same amount of heat is developed in both the resistance then find the internal resistance of the cell

A

`((R + r))/(2)`

B

`((R - r))/(2)`

C

`((Rr))/(2)`

D

`sqrt((R r))`

Text Solution

Verified by Experts

The correct Answer is:
D
Promotional Banner

Similar Questions

Explore conceptually related problems

In fig the current through resistance (R) is

A cell of constant emf first connected to a resistance R_(1) and then connected to resistance R_(2) . If power deliverd in both cases is same, then the internal resistance of the cell is

A cell of constant e.m.f. first connected to a resistance R_(1) and then connected to a resistance R_(2) . If power delivered in both cases is then the internal resistance o f the cell is

A cell of emf E and internal resistance r supplies currents for the same time t through external resistances R_(1) = 100 Omega and R_(2) = 40 Omega separately. If the heat developed in both cases is the same, then the internal resistance of the cell is

Two identical cells connected in series send 1.0A current through a 5 Omega resistor. When they are connected in parallel, they send 0.8 A current through the same resistor. What is the internal resistance of the cell?