Advertisements
Advertisements
Question
In a simple circuit, why does the bulb glow when you close the switch?
Options
The switch produces electricity.
Closing the switch completes the circuit.
Closing the switch breaks the circuit.
The bulb is getting charged.
Advertisements
Solution
Closing the switch completes the circuit.
Explanation:
When you close the switch in a simple circuit:
- It completes the path for the electric current to flow.
- The electric current flows from the power source (like a battery), through the wires, the switch, and the bulb.
- The filament in the bulb heats up due to the flow of current, and as a result, the bulb glows.
APPEARS IN
RELATED QUESTIONS
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.
Right or wrong sentence.
Increasing the current passing through the wire decreases the magnetic field intensity.
Flow of electricity through a closed circuit is _____.
Assertion: People struck by lightning receive a severe electrical shock.
Reason: Lightning carries very high voltage.
What is the role of the earth wire in domestic circuits?
Three bulbs A, B, C are connected in a circuit as shown in the following figure. When the switch is ‘ON’
Observe the circuit given:
1. Would any of the bulbs glow when the switch is in the ‘OFF’ position?
2. What will be the order in which the bulbs A, B, and C will glow when the switch is moved to the ‘ON’ position?
In the above circuit, if the current reading in the ammeter A is 2A, what would be the value of R1?
The ______ is a species of fish that can give electric shocks of up to six hundred fifty watts of electricity.
