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संबंधित प्रश्न
An electric bulb is rated at 220 V, 100 W. What is its resistance?
Which uses more energy: a 250 W TV set in 1 hour or a 1200 W toaster in 10 minutes?
A battery of e.m.f 15 V and internal resistance 2 Ω is connected to two resistors of resistance 4 ohm and 6 ohm joined in series. Find the electrical energy spent per minute in 6 ohm resistor.
Define 1 kilowatt hour.
State the S.I. units of electrical power and electrical energy.
(i) Define the household unit of electricity.
(ii) What is the voltage of the electricity that is generally supplied to a house?
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.
What does the unit kilowatt hour measure? Define it.
Which cable, one rated 15A and the other rated 5A will be thicker? Give a reason.
Mention three uses of the carbon arc.
Two bulbs are rated: bulb A 100W, 120 V bulb B 10 W, 120 V. If both are connected across a 120V supply, which bulb will consume more energy, When in parallel? Also calculate the current through each bulb in the above cases.
