Physics
Grade-7
Easy
Question
A fuse wire is made up of alloy
- Tin-lead
- Constantan
- Manganin
- Nichrome
Hint:
Tin-lead
The correct answer is: Tin-lead
A fuse wire is made up of tin and lead alloy because it has low melting point, so that it may melt easily, whereas a copper wire cannot be used as a fuse wire because it has a high melting point due to which it will not melt easily when a short circuit takes place.
Related Questions to study
Physics
How many bulbs are there in the given circuit diagram?
How many bulbs are there in the given circuit diagram?
PhysicsGrade-7
Physics
How many resisters are there in the given circuit diagram?
How many resisters are there in the given circuit diagram?
PhysicsGrade-7
Physics
Nichrome is used as a coil of heater because
Nichrome is used as a coil of heater because
PhysicsGrade-7
Physics
To make a battery of two cells
To make a battery of two cells
PhysicsGrade-7
Physics
Which one of the following devices is based on the heating effect of electric current?
Which one of the following devices is based on the heating effect of electric current?
PhysicsGrade-7
Physics
Key or switch in the circuit is placed
Key or switch in the circuit is placed
PhysicsGrade-7
Physics
Which one of the following devices is not based on the heating effect of electric current?
Which one of the following devices is not based on the heating effect of electric current?
PhysicsGrade-7
Physics
Why are symbols used for electric components?
Why are symbols used for electric components?
PhysicsGrade-7
Physics
Electric voltage is measured by a device
Electric voltage is measured by a device
PhysicsGrade-7
Physics
When two or more cells are joined together, it forms a
When two or more cells are joined together, it forms a
PhysicsGrade-7
Physics
When excess current flows through the wire, it shows
When excess current flows through the wire, it shows
PhysicsGrade-7
Physics
The presence of current in a circuit is detected using a __________.
The presence of current in a circuit is detected using a __________.
PhysicsGrade-7
Physics
Which one of the following is a safety device?
Which one of the following is a safety device?
PhysicsGrade-7
Physics
The device used to make or break an electric circuit is
The device used to make or break an electric circuit is
PhysicsGrade-7
Physics
Electric current is measured by a device
Electric current is measured by a device
PhysicsGrade-7
