When a resistor of 11 Ω is connected in series with an electric cell. The current flowing in it is 0.5 A. Instead when a resistor of 5Ω is connected to the same electric cell in a series combination, the current increases to 0.9 A. The internal resistance of the cell is

The potential difference across the terminals of a battery is 50 V when 11 A current is drawn and 60 V when 1 A current is drawn. The emf and the internal resistance of the battery are

In CuSO₄ solution when electric current equal to 2.5 faradays is passed, the gm equivalent deposited on the cathode is

Five resistances are connected as shown in the figure. The effective resistance between points A and B is 

Three resistors 1Ω, 2Ω and 3Ω are connected to form a triangle. Across 3 Ω resistor, a 3V battery is connected. The current through 3Ω resistor is

The ratio of the amounts of heat developed in the four arms of a balance Wheatstone bridge, when the arms have resistances P = 100Ω, Q = 10Ω, R = 300Ω and S = 30Ω respectively is

Let i be the total current passing through balanced Wheatstone bridge. Current though arms of resistances P and Q in series is 

There are two bulbs, connected in series, a 25 W-220 V bulb and another 100 W-220 V bulb. Which electric bulb will glow more brightly?

In the circuit shown in figure, the emf and internal resistance of the battery are E and r. R₁ and R₂ are two resistance of fixed resistance. As the side of variable resistor R moves towards A, the current I₁ through R₁ and current I₂ through R₂ change as follows- 

An ideal coil of 10H is connected in series with a resistance of 5Ω and a battery of 5 V. 2 seconds after the connection is made, the current flowing in amperes in the circuit is