A few straings cells in series are to be charge from a `30V` d.c. supply The end of each cutt is `1.35V` and internal resistance is `0.1 Omega` The charging current is `3.0A` in this arrangement how many calls can be charge and what extra resistance is required be the connected in the circuit ?

A few storage cells in series are to be charged from a 200 V dc supply. The emf of each cell is 2.5 V, Internal resistance 0.1 Omega and the charging current is 8A. In this arrangement how many cells can be charged and what extra resistance is required to be conncted in the circuit?

Ten cells each of emf 1 V and internal resistance 1Omega are connected inseries. In this arrangement, polarity of two cells is reversed and the system is connected to an external resistance of 2Omega . Find the current in the circuit.

Ten cells each of emf 1 V and internal resistance 1Omega are connected inseries. In this arrangement, polarity of two cells is reversed and the system is connected to an external resistance of 2Omega . Find the current in the circuit.

A battery of 20 cells is charged by 220 V with a charging current of 15 A . If the emf of each cell is 2 V and internal resistance is 0.1 Omega , then the series resistance required to be placed in the circuit will be

A battery of 20 cells is charged by 220 V with a charging current of 15 A . If the emf of each cell is 2 V and internal resistance is 0.1 Omega , then the series resistance required to be placed in the circuit will be

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?

A cell has an emf of 3V and an internal resistance r. The circuit current is 0.75A when it is connected to an external resistance of 1 Omega . IF the poles are connected directly what will be the current (in A)?

A battery of 20 cells (each having e.m.f. 1.8V and internal resistance 0.1Omega is charged by 220 volts and the charging current is 15A. Calculate the resistance to be put in the circuit.

A battery of 20 cells (each having e.m.f. 1.8V and internal resistance 0.1Omega is charged by 220 volts and the charging current is 15A. Calculate the resistance to be put in the circuit.

A battery of 20 cells (each having e.m.f. 1.8V and internal resistance 0.1Omega is charged by 220 volts and the charging current is 15A. Calculate the resistance to be put in the circuit.