Advertisements
Advertisements
प्रश्न
______ is the device used to close or open an electric circuit.
Advertisements
उत्तर
Positive is the device used to close or open an electric circuit.
APPEARS IN
संबंधित प्रश्न
Draw a schematic diagram of a circuit consisting of a battery of three cells of 2 V each, a 5 Ω resistor, an 8 Ω resistor, and a 12 Ω resistor, and a plug key, all connected in series.
Draw a circuit diagram to show how 3 bulbs can be lit from a battery so that 2 bulbs are controlled by the same switch the third bulb has its own switch.
Increasing the current passing through the wire decreases the magnetic field intensity.
Rahul wants to make an electric circuit. He has a bulb, two wires, a safety pin, and a piece of copper. He does not have any electric cell or battery. Suddenly he gets some idea. He uses lemon instead of a battery and makes a circuit. Will the bulb glow?
In which among the following circuits does the bulb glow?
State whether true or false. If false, correct the statement.
Ammeter is connected in parallel in any electric circuit.
Instead of metal wires, a jute string can be used to make a circuit.
Draw a circuit diagram of an electric circuit containing a cell, a key, an ammeter, a resistor of 2 Ω in series with a combination of two resistors (4 Ω each) in parallel and a voltmeter across the parallel combination. Will the potential difference across the 2 Ω resistor be the same as that across the parallel combination of 4 Ω resistors? Give reason.
Three bulbs A, B, C are connected in a circuit as shown in the following figure. When the switch is ‘ON’
Will the bulb glow in the circuit shown in the following figure? Explain.
