Two identical cells, each of emf E, having negligible internal resistance, are connected in parallel with each other across an external resistance R. What is the current through this resistance ?

Two identical cells each of emf epsilon , having negligible internal reistance r, are connercted in parallel with each other across an external resistance R. What is the current through this resistance.

If n cells each of emf E and internal resistance rare connected in parallel, then the total emf and internal resistances will be

n identical cells each of e.m.f. E and internal resistance r are connected in series. An external resistance R is connected in series to this combination. The current through R is

Four cells, each of emf E and internal resistance r, are connected in series across an external resistance R. By mistake one of the cells is connected in reverse. Then, the current in the external circuit is

Two identical batteries each of emf E= 2 volt and internal resistance r=1 ohm are available t . produce heat in an external resistance by passing a current through it. What is the maximum power that can be developed across an external resistance R using these batteries?

n identical cells each of emfe and internal resistance r are joined in series so as to form a closed circuit. The P.D. across any one cell is

Two cells , each of emf E and internal resistance r , are connected in parallel across a resistor R . The power delivered to the resistor is maximum if R is equal to

There are n cells, each of emf E and internal resistance r, connected in series with an external resistance R. One of the cells is wrongly connected, so that it sends current in the opposite direction. The current flowing in the circuit is

Seven identical cells each of e.m.f. E and internal resistance r are connected as shown . The potential difference between A and B is

Two batteries of E_(1) internal resistance r_(1) & emf E_(2) internal resistance r_(2) are connected in parallel and makes a battery system. An external resistance R is connected across this system as shown in the figure.