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संबंधित प्रश्न
At what frequency is AC supplied to residential houses?
An electric lamp is labelled 12 V, 36 W. This indicates that it should be used with a 12 V supply. What other information does the label provide?
A bulb is rated as 250 V; 0.4 A. Find its : (i) power, and (ii) resistance.
Name the physical quality which is measured in
(i) Kw (ii) kWh
Two resistors A and B of 4 Ω and 6 Ω respectively are connected in parallel. The combination is connected across a 6 volt battery of negligible resistance. Calculate the power supplied by the battery.
Why is the heating element of an electric oven wound on a helix? State the reason.
Three 250 W heaters are connected in parallel to a 100 V supply, Calculate total current taken from the supply.
An electric bulb is rated 240V-60W and is working at 100% efficiency.
(i) Calculate the resistance of bulb.
(ii) (a) Draw the circuit diagram.
(b) What is the rate of conversion of energy in each bulb?
(c) Total power used by the bulbs.
What is the resistance of an appliance rated at V volt, P watt?
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.
