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
How does the short circuit form? What is its effect?
Who will spend more electrical energy? 500 W TV Set in 30 mins, or 600 W heater in 20 mins?
In any electric circuit, when the switch is on and the current flows through it why do the wire, switches, bulb or devices become hot?
In the given circuit diagram, which of the given switch(s) should be closed. So that only bulb A glows.
Study the electric circuit below. Which of the following switches should be closed so that only two bulbs will light up
In the following circuits (Figure), heat produced in the resistor or combination of resistors connected to a 12 V battery will be
 |
 |
 |
| (i) | (ii) | (iii) |
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 the above circuit, if the current reading in the ammeter A is 2A, what would be the value of R1?
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.
