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Fill in the blanks :
$(a)$. A device that is used to break an electric circuit is called _______________.
$(b)$. An electric cell has _______________
1. A device that is used to break an electric circuit is called a switch.
2. An electric cell has two terminals.
Explanation:
Switch:
The switch is a device that is used to break or complete an electric circuit, giving us control over the flow of current.
Here in the given figure:
(i) Circuit is open and no current flows through the circuit resulting in the bulb does not glow. This is called switch is OFF.
(ii) Circuit is closed and current is flowing through the circuit resulting in the bulb glow. This is called switch is ON.
Electric cell:
An electric cell is an energy source that has chemical energy stored inside it and it has two terminals positive and negative. The metal cap is the positive terminal of an electrical cell. While the metal disc is the negative terminal of an electric cell as shown in the figure below-
Updated on: 10-Oct-2022
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