Electric Circuit
Electric Circuit
A closed and continuous path through which electric current flows is known as electric circuit. It has various components including:
| S.No. | Name | Symbol | Appearance |
| 1 | Source- Cell |  |
 |
| 2 | Source - Battery |  |
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| 3 | Load |  |
 |
| 4 | Switch |  |
 |
| 5 | Fuse |  |
 |
| 6 | Connecting Wires |  |
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| 7 |
Rheostat (Variable Resistance) |
 |
 |
| 8 | Ammeter |  |
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| 9 | Voltmeter |  |
 |
The connecting wires are generally made of copper.
Circuit Diagram:
An electric circuit is a path through which electric current flow. The simplest circuit we come across is the circuit consisting of a battery and a bulb in a torch. When the torch is switched on electric current flows through the bulb which lights it up.Drawing diagrams of the actual components in a circuit is a very time consuming and skillful task. It is much easier to use symbol of each of the components. Diagrams drawn in this way are called circuit diagrams.
When the key is closed, then the circuit is called closed circuit. This means that current would flow through the circuit to operate the device. When the key is open, then the circuit is called open circuit. This means that current would not flow through the circuit.
Which of the following are correct ? (a) The unbroken path through which an electric current can flow is called an circuit diagram . (b) In a circuit diagram there should be a source, that is, one or more electric cells. (c) The electric circuit is a path through which electric current flow. | |||
| Right Option : B | |||
| View Explanation | |||
Circuit diagrams is : | |||
| Right Option : C | |||
| View Explanation |
There are two bulbs connected across two cell in a circuit. What should be done to make the bulb glow brighter? | |||
| Right Option : C | |||
| View Explanation | |||
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