Advertisements
Advertisements
प्रश्न
Distinguish between a closed circuit and an open circuit, with the use of suitable labelled diagrams.
Advertisements
उत्तर
A circuit is said to be closed when every part of it is made of a conductor and on plugging in the key or on being complete, current flows through the circuit.
A circuit is said to be open when no current flows through it. It can happen when the key is not plugged in or when any one of its components is not made of a conductor or when the circuit is broken.
APPEARS IN
संबंधित प्रश्न
Draw circuit symbols for
fixed resistance
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.
The switch is used to close or open an electric circuit.
Draw the circuit diagram for the series connection.
What is the role of the earth wire in domestic circuits?
Instead of metal wires, a jute string can be used to make a circuit.
A child has drawn the electric circuit to study Ohm’s law as shown in Figure. His teacher told that the circuit diagram needs correction. Study the circuit diagram and redraw it after making all corrections.
In an electric circuit a fuse is a ______ ______ to prevent possible fire.
Boojho has a cell and a single piece of connecting wire. Without cutting the wire in two, will he be able to make the bulb glow? Explain with the help of a circuit diagram.
Assertion: People struck by lightning receive a severe electrical shock.
Reason: Lightning carries very high voltage.
