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प्रश्न
Draw circuit symbols for
a battery of three cells
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उत्तर
a battery of three cells
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संबंधित प्रश्न
Explain with the help of a labelled circuit diagram how you will find the resistance of a combination of three resistors, or resistance R1, R2 and R3, joined in parallel. Also mention how you will connect the ammeter and the voltmeter in the circuit when measuring the current in the circuit and the potential difference across one of the three resistors of the combination.
How does the short circuit form?
Who will spend more electrical energy? 500 W TV Set in 30 mins, or 600 W heater in 20 mins?
Write the condition required for a circuit to be a closed circuit.
Draw a neat diagram showing a open electric circuit.
What is open circuit?
The unit of electrical power is _______.
What is the potential difference?
Write scientific reason.
It is beneficial to carry electrical energy in AC form as it is carried over long distances.
The switch is used to close or open an electric circuit.
State whether true or false. If false, correct the statement.
Ammeter is connected in parallel in any electric circuit.
The wiring in a house consists of ______ circuits.
Assertion: In an open circuit, the current passes from one terminal of the electric cell to another.
Reason: Generally, the metal disc of a cell acts as a positive terminal.
The ______ is a species of fish that can give electric shocks of up to six hundred fifty watts of electricity.
Overloading of electric circuits can lead to short-circuiting.
A complete circuit is left on for several minutes, causing the connecting copper wire to become hot. As the temperature of the wire increases, the electrical resistance of the wire
How is Joule's law effect useful in electric circuits where fuse is used as a safety device?
Set up the circuit shown in Figure again. Move the key to ‘ON’ position and watch carefully in which direction the compass needle gets deflected. Switch ‘OFF’ the current. Now keeping rest of the circuit intact, reverse the connections at the terminal of the cell. Again switch ‘on’ the current. Note the direction in which the needle gets deflected. Think of an explanation.
