An electric circuit is a complete path in which electric current flows from one
terminal to another.
An electric circuit has a source of energy such as dry cells, current conductors or
wires, a bulb and a switch
We make electricity by creating an electric circuit.
For example, when you flip the switch on in the house, you are completing the
electrical circuit. This causes electricity to flow and turn on the light bulb.
When devices are connected in a circuit one after the other, the circuit is called a series circuit.
A series circuit has only one path which the charges flow.
A parallel circuit had more than one path through which charges can flow.
The instrument which measures voltage is known as a voltmeter. Voltage refers to electrical force that would drive electric current between two points.
A voltmeter is connected in parallel at two pints where the potential difference is
measured.
When cells are connected in parallel, the current flowing through the circuit is the same. Therefore, the brightness of the bulbs remains the same regardless of the number of dry cells.
When you increase the number of bulbs in a series circuit, the brightness of the bulbs decreases.
Bulbs arranged in parallel are brighter than bulbs arranged in series.
The instrument that measures the electric current flowing in a circuit is an
ammeter.
An ammeter is connected in series with a circuit so that the current being measured flows through the ammeter.
A bulb connected to two cells in series is brighter than a bulb connected to two cells in parallel.
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