The internal resistance of two cells are I `Omega` and 2 `Omega`. Their e.m.fs are 1.5 V and 2 V respectively. The parallel combination of these two cells are connected to an external resistance 5 `Omega`.
draw the circuit and find current thorough external resistance.

Two cells one of emf 1.4 V and internal resistance 0.6 Omega the other of emf 2.5. V and internal resistance 0.3 Omega are connected in parallel and the combination is connected in series with an external resistance of 4 Omega . What is the current through this resistance?

Resistances of two coils of wire are 3 Omega and 6 Omega . If these coils be connected is (i) series and in (ii) parallel combination, then what will be the equivalent resistance in each case ?

Two electric cells each of emf 1.5 V and internal resistance 2 Omega are connected in parallel and this combiantion of cells is connected with an external distance of 2 Omega . What will be the current in the external circuit?

The internal resistance of a cell of emf E is r, and external resistance is R. What is the potential about the external Resistance

5 electric cells are connected in series .Emf of each cell is 1.5 V and internal resistance is 0.1 Omega .When this combination of cells is connected with an external circuit of resistance 4 Omega, what will be the current through that resistance? What resistance should be connected instead of 4 Omega so that the current will be halved?

Emf of an electric cell is 2.1 V and its internal resistance is 0.1 Omega . When the two poles of the cell are connected with an external resistance, a potential difference of 2.08 V is obtained. Determine the value of the external resistance.

Three resistances of 4 Omega , 5Omega and 12 Omega are connected in parallel.A battery of emf 10 v and internal resistance 0.5 Omega . Is connected with that combination .Find out the currents through this battery and through each of this three resistances.

Emf of each of 15 cells is 2V and internal resistance of each is 0.1 Omega . The cells are arranged in a parallel combination containing 3 rows of 5 cells each. Determine the emf and internal resistance of the entire combination of cells.

The equivalent resistance of two coils connected in series and in parallel are 12Omega and 5/3 Omega respectively. Calculate the value of each resistance.