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प्रश्न
Mention three uses of the carbon arc.
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उत्तर
(i) They are used in light houses.
(ii) They are used in search lights and cinema projection appliances.
(iii) They are used in electric furnace and electric welding.
संबंधित प्रश्न
Which particles are responsible for current in conductors?
Name the commercial unit of electric energy.
What is meant by "electric power"?
The unit for expressing electric power is:
(a) volt
(b) joule
(c) coulomb
(d) watt
Which material is the calorimeter commonly made of? Give one reason for using this material.
State (i) the S. I. unit, (ii) the household unit, of electrical energy. How are these units related?
1 kWh = ____________
In the given figure, the emf of the cell is 2.2 V, and if internal resistance is 0.6 Ω. Calculate the power dissipated in the whole circuit.
An overhead tank of capacity 10 k litre is kept at the top of building 15 m high. Water falls in tank with speed 5`sqrt2` m/s. Water level is at a depth 5 m below ground. The tank is to be filled in `1/2` hr. If efficiency of pump is 67.5% electric power used is ______ W.
