Current Electri...

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 currentthrough R is

A cell of internal resistance r is connected to an external resistance R. The current will be maximum in R, if

To get the maximum current from a parallel combination of n identical cells each of internal resistance r and external resistance R, when

Two identical cells send the same current in 2 Ω, resistance, whether connected in series or in parallel. The internal resistance of the cell should be

The internal resistances of two cells shown are 0.1Ω and 0.3 Ω. If R = 0.2 Ω, the potential difference across the cell

A torch battery consists of two cells of 1.45 volt and an internal resistance 0.15 Ω. If each cell sends current through the filament of the lamps having resistance 1.5 ohm, the value of current will be

The electromotive force of a primary cell is 2 volt. When it is short-circuited it gives a current of 4 ampere. Its internal resistance in ohm is

The figure shows a network of currents. The magnitude of currents is shown here. The current i will be

A battery of e.m.f. E and internal resistance r is connected to a variable resistor R as shown here. Which one of the following is true?

Two cells having the internal resistance 0.2 Ω. and 0.4 Ω are connected in parallel. The voltage across the battery terminal is 1.5 Volt. The e.m.f. of first cell is 1.2 Volt. The e.m.f. of the second cell is