what does circuits contains
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Circuit is the path through which electric charge flows. The circuit may be either close or open. It generally constitutes of wire, switch and a device for output or the result. But more things can be added to the circuit such as voltmeter, ammeter, light bulb, motor, resistor, etc.
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In simple language we can say that electric circuit is a closed conducting path containing a source of electric energy and the load through which electric current flows.
Circuits contains:
* A cell or a battery for potential difference. It is the main source of electric circuit because battery converts chemical energy into electric energy which produces electric current.
* A device or a load utilising the electric energy. It is used to test the presence of electric current.
* An electric wires through which current can easily flow. It is medium which allows to pass the electric current.
* A switch or a key is used to control the circuit On/Off. When we "on" the circuit, the bulb glows. When we "off" the circuit, the bulb doesn't glows.
* A voltmeter is used to measure the potential difference. It is always connected in parallel across a wire. When voltmeter is connected in parallel across a conductor, the positive terminal of the voltmeter must be connected with the positive terminal of a cell or battery and its negative terminal must be connected with the negative terminal of the cell or battery.
* An ammeter is used to measure the electric current. It is always connected in series. Its positive terminal must be connected with the positive terminal of a cell or battery and its negative terminal must be connected with the negative terminal of the cell or battery.
In simple language we can say that electric circuit is a closed conducting path containing a source of electric energy and the load through which electric current flows.
Circuits contains:
* A cell or a battery for potential difference. It is the main source of electric circuit because battery converts chemical energy into electric energy which produces electric current.
* A device or a load utilising the electric energy. It is used to test the presence of electric current.
* An electric wires through which current can easily flow. It is medium which allows to pass the electric current.
* A switch or a key is used to control the circuit On/Off. When we "on" the circuit, the bulb glows. When we "off" the circuit, the bulb doesn't glows.
* A voltmeter is used to measure the potential difference. It is always connected in parallel across a wire. When voltmeter is connected in parallel across a conductor, the positive terminal of the voltmeter must be connected with the positive terminal of a cell or battery and its negative terminal must be connected with the negative terminal of the cell or battery.
* An ammeter is used to measure the electric current. It is always connected in series. Its positive terminal must be connected with the positive terminal of a cell or battery and its negative terminal must be connected with the negative terminal of the cell or battery.
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