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A common emitter amplifier has voltage gain of 50, an input impedance of 100 ohm and an output impedance of 200 ohm .The power gain of the amplifier is

In which of the following cases more electrical energy is consumed per hour? (i) A current of 1 ampere passed through a resistance of 300 ohms. (ii) A current of 2 amperes passed through a resistance of 100 ohms.

An electric bulb of resistance 440 ohm is connected to 220 volt mains for 10 hours. Find the amount of electrical energy consumed in BOT unit.

Three resistors are connected to form the sides of a triangle ABC , the resistance of the sides AB, BC and CA are 40 ohms , 60 ohms and 100 ohms respectively. Find the effective resistance between the points A and B in ohms .

A n a.c. circuit that contians an inductance and a resistance has an impedance of 50 ohm at 100 Hz and an impedance of 100 ohm at 500 Hz. What are the values of inductance and the resistance of the circuit?

How much energy is consumed when a current of 5 amperes flows through the filament (or element) of a heater having resistance of 100 ohms for two hours? Express it in joules.

The temperature coefficient of resistance of a wire is 0.00125 per degree celsius. At 300K, its resistance is 1 ohm. This resistance of the wire will be 2 ohm at.

A resistance of 900 ohm is connected in series with a galvanometer of resistance 100 ohm. A potential difference of 1 V produces a deflection of 100 division in the galvanometer. Find the figure of merit of galvanometer.

Calculate the number of units consumed by a TV in a leap year which is rated at 100 W if it is used 6 hours per day.