Second question I have a doubt
Answers
Answer:
When the terminals of the bulb are connected with that of electric cell by wires, a current pass through the filament of the bulb and it makes the bulb glow.
Explanation:
A switch is a simple device that either breaks the circuit or completes it.
physics electricity switch off
Switch is 'OFF'
When switch is in ‘OFF’ position, then the circuit is open i.e. no current flows through the circuit and when switch is in ‘ON’ position, then the circuit is complete i.e. current flows through the circuit.
Physics Electricity Switch ON
Switch is 'ON'
(b) An electric cell has two terminals
Answer:
Bulb glow in an electric circuit when it is connected to battery because battery provides it a charge which flows from positive to negative , through the wire in it it generates heat , which is changed into light energy .
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