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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
The SI unit of energy is :
(a) joule
(b) coulomb
(c) watt
(d) ohm-metre
A current of 0.2 A flows through a wire whose ends are at a potential difference of 15 V.
calculate:
(i) the resistance of the wire and
(ii) the heat energy produced in 1 minute.
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.
A resistor of resistance R is connected to an ideal battery. If the value of R is decreased, the power dissipated in the resistor will ______________ .
What is ‘Rating’ of an electric appliance?
1 kWh is equal to:
The electrical power and current in the circuit relates by ______
