Questions in Current Electricity

Select	Question
	100 cells each of e.m.f. 5 V and internal resistance 1 ohm are to be arranged so as to produce maximum current in a 25 ohms resistance. Each row is to contain equal number of cells. The number of rows should be
	The current in the arm CD of the circuit will be
	When a resistance of 2 ohm is connected across the terminals of a cell, the current is 0.5 A. When the resistance is increased to 5 ohm, the current is 0.25 A. The e.m.f. of the cell is
	Two non-ideal identical batteries are connected in parallel. Consider the following statements (i) The equivalent e.m.f. is smaller than either of the two e.m.f.s (ii) The equivalent internal resistance is smaller than either of the two internal resistances
	If six identical cells each having an e.m.f. of 6V are connected in parallel, the e.m.f. of the combination is
	Consider the circuit shown in the figure. The current ${I_3}$ is equal to
	If ${V_{AB}} = 4V$ in the given figure, then resistance X will be
	Two resistances ${R_1}$ and ${R_2}$ are joined as shown in the figure to two batteries of e.m.f.${E_1}$ and ${E_2}$. If ${E_2}$ is short-circuited, the current through ${R_1}$is
	A storage battery has e.m.f.15 volts and internal resistance 0.05 ohm. Its terminal voltage when it is delivering 10 ampere is
	The number of dry cells, each of e.m.f. 1.5 volt and internal resistance 0.5 ohm that must be joined in series with a resistance of 20 ohm so as to send a current of 0.6 ampere through the circuit is