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प्रश्न
Give two precautious that you would take while putting off an electric switch.
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उत्तर
We will make sure that no naked wire is touching the button of the switch and neither the hand nor the switch is wet.
संबंधित प्रश्न
An electric lamp is labelled 12 V, 36 W. This indicates that it should be used with a 1 V supply. What other information does the label provide?
Name the physical quality which is measured in
(i) Kw (ii) kWh
An electric bulb is rated ‘100 W, 250 V’. What information does this convey?
State two advantages of filling an inert gas in an evacuated electric filament lamp.
With reference to the diagram shown below calculate:
(i) The equivalent resistance between P and Q.
(ii) The reading of ammeter.
(iii) The electrical power between P and Q.
An Electric bulb is marked 100 W, 230 V. What find the energy consumed by the bulb in one hour.
The resistance of filament of an electric heater is 500 Ω It is operated at 200V for 1 hour daily. Calculate the current drawn by the heater and the energy consumed in joule.
A electric bulb is rate 220 V, 60 W. its electric cell resistance is nearly
1 kWh = ______ J.
