Why does a ſused bulb not glow when connected in an electric circuit?
(1 Point)
The electnc circuit remains incomplete
There occurs a break in the path of current
Both the above
None of the above
Plz tell I am having exam
Answers
Answer:
Question1.
Fill in the blanks in the following
A device that is used to break an electric circuit is called _______.
An electric cell has _____ terminals.
Answer:
(a) A device that is used to break an electric circuit is called electric switch.
Explanation:-
A switch is a simple device that either breaks the circuit or completes it.
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.
Switch is 'ON'
(b) An electric cell has two terminals.
Explanation:-
An electric cell has 2 terminals positive and negative.
Electrical Cell
Question2.
Mark 'True' or 'False' for following statements:
(a) Electric current can flow through metals.
(b) Instead of metal wires, a jute string can be used to make a circuit.
(c) Electric current can pass through a sheet of thermoCol.
Answer:
(a) Electric current can flow through metals. (True)
Explanation: -
As metals are good conductors of electricity so they allow current to flow them easily.
(b) Instead of metal wires, a jute string can be used to make a circuit. (False)
Explanation: -
As Jute is bad conductor of electricity therefore if jute string is used to make an electric circuit, then the current will not flow through it.
(c) Electric current can pass through a sheet of thermo Col. (False)
Explanation: -
ThermoCol is a bad conductor of electricity.
Answer:
(C) Both the above ( a and b )