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प्रश्न
Define the term kilowatt - hour and state its value in S.I. unit.
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उत्तर
One kilowatt-hour (kWh) is the electrical energy consumed by an electrical appliance of power 1 kW when it is used for one hour.
Its value in SI unit is 1 kWh = 3.6 × 106 J
संबंधित प्रश्न
Draw the electrical symbols of the following components and state its use
Wire crossing
One coulomb charge is equivalent to the charge contained in:
(a) 2.6 × 1019 electrons
(b) 6.2 × 1019 electrons
(c) 2.65 × 1018 electrons
(d) 6.25 × 1018 electrons
The atoms of copper contain electrons and the atoms of rubber also contain electrons. Then why does copper conduct electricity but rubber does not conduct electricity?
What happens to the other bulbs in a series circuit if one bulb blows off?
Tick(✓) the correct choice in the following:
Which of the following quantities has the same value for all electrical
appliances connected to the ring main circuit in a house?
An auto lamp is joined to a battery of e.m.f. 4 V and internal resistance 2.5Ω. A steady current of 0.5 A flows through the circuit. Calculate the
(a) Total energy provided by battery in 10 minutes,
(b) Heat dissipated in the bulb in 10 minutes.
A bulb is connected to a battery of p.d. 4 V and internal resistance 2.5 Ω . A steady current of 0.5 A flows through the circuit. Calculate:
The total energy supplied by the battery in 10 minutes
At the time of short circuit, the electric current in the circuit ______.
State the conditions for the flow of charge in a circuit from one point to the other.
Small amounts of electrical current are measured in milliampere (mA). How many milliampere are there in 0.25 A ?
