Electricity - 04
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Q.1. At a given time, a house is supplied with 100 A at 220 V. How many 75 W, 220 V light bulbs could be switched on in the house at the same time (if they are all connected in parallel) ? *
1 point
Q.2. If the potential difference between the ends of a fixed resistor is halved, the electric power will become : *
1 point
Q.3. The heat produced by passing an electric current through a fixed resistor is proportional to the square of : *
1 point
Q.4. The current passing through an electric kettle has been doubled. The heat produced will become : *
1 point
Q.5. An electric fuse works on the : *
1 point
Q.6. The elements of electrical heating devices are usually made of : *
1 point
Q.7. The heat produced in a wire of resistance ‘x’ when a current ‘y’ flows through it in time ‘z’ is given by : *
1 point
Q.8. Which of the following characteristic is not suitable for a fuse wire ? *
1 point
Q.9. In a filament type light bulb, most of the electric power consumed appears as : *
1 point
Q.10. If the current flowing through a fixed resistor is halved, the heat produced in it will become : *
1 point
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