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प्रश्न
Of the three connecting wires in a household circuit: Which two of the three wires are at the same potential? In which of the three wires should the switch be connected?
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उत्तर
Neutral wire and Earth wire are at same potential and the switch be connected to live wire.
संबंधित प्रश्न
Define Electric power.
Name the quantity whose unit is (i) kilowatt, and (ii) kilowatt-hour.
Which of the following is likely to be the correct wattage for an electric iron used in our homes?
(a) 60 W
(b) 250 W
(c) 850 W
(d) 2000 W
An electric bulb is rated ‘100 W, 250 V’. What information does this convey?
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.
State three factors on which the heat produced in a metallic wire due to passage of current in it depends.
An electric filament lamp is connected to a supply of voltage higher than the recommended value. Give reasons, why compared with a normal performance, the lamp emits a brighter light and its life is shortened.
How does the heat produced by die passage of current in a metallic wire depend on the resistance of the wire.
How can electric energy consumed by an electric appliance be calculated in kilowatt hour (kWh)?
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.
