Electric Bulb and Electric Fuse
- Fuse melts down if the current is less than 5 A.
- Fuse allows a current only equal to 5 A through it.
- Fuse produces energy if current is less than 5 A.
- Fuse melts if the current is more than 5 A.
Why is fuse wire used in electric circuits?
- To increase current flowing in the circuit.
For the protection of electrical appliances and circuit.
To prevent insulation.
- To increase the voltage.
In a bulb, electrical energy is converted into:
Both Heat and Light energy
Which of the following is used as a safety device?
Filament of a bulb is made up of:
An electric bulb works on which of the following principles:
Both A and B
Magnetic effect of electric current
Heating effect of electric current
Chemical effect of electric current
Which is the component that breaks the electric circuit in case of excess current?
For a fuse rated at 5A, the fuse melts if the current in the circuit exceeds 5A.
- Short circuit
- (b) and (c) above.
When the live wire and the fuse wire come in contact with each other in a circuit, it causes a/an _________.