What is fuse and what is its purpose?

The fuse breaks the circuit if a fault in an appliance causes too much current to flow. This protects the wiring and the appliance if something goes wrong. The fuse contains a piece of wire that melts easily.

What are the requirements of good fuse?

Low resistance and high melting point.

What is fuse short answer?

A fuse is a safety device in an electric plug or circuit. It contains a piece of wire which melts when there is a fault so that the flow of electricity stops. When things fuse or are fused, they join together physically or chemically, usually to become one thing.

What do you mean by a fuse?

Fuse is defined as to join together to form one, especially when joined by intense heat. The definition of a fuse is an electrical safety device that can stop current from flowing if it becomes overloaded, or a device that is used to ignite an explosive device.

What is the role of fuse used in series with an electrical appliance?

Fuse is used for protecting appliances due to short circuiting or overloading. The fuse is rated for a certain maximum current and blows off when a current more than the rated value flows through it.

What is the function of an electric fuse Class 7?

An electric fuse is an electric device which interrupts the flow of current in an electric circuit. It is installed in a circuit to stop the flow of excessive current. A fuse is usually a short piece of wire.

What is the requirement of a fuse wire?

The material for the fuse wire must be a conductor. It should have a low melting point, such that when excess current passes through it, it melts down and breaks the circuit, hence stopping the current.

What is the requirement of connecting fuse in a circuit?

Fuses are always connected in series with the component(s) to be protected from overcurrent, so that when the fuse blows (opens) it will open the entire circuit and stop current through the component(s).

What is fuse and what is its purpose What will happen if no fuse is provided n the electric circuit?

If there is a fusholder, but no fuse within it, then the circuit is incomplete and no current will flow. The circuit is ‘dead’If the circuit has been built without a fuseholder, then it will be live and will work normally but without any protection from an overload or a defect.

On what principle does the fuse operate?

heating effect of electric current
Ans- Electric fuse is based on the principle of heating effect of electric current. Heat is produced when current flows in the wire.

Why do fuses have voltage ratings?

The voltage rating of a fuse is a function of its capability to open a circuit under an overcurrent condition. Specifically, the voltage rating determines the ability of the fuse to suppress the internal arcing that occurs after a fuse link melts and an arc is produced.

What is a fuse rating and why is it important?

The fuse rating is a valuable piece of information because it helps you to protect your electrical circuit and therefore should never be neglected. Every electrical circuit will need a different amount of electrical current, what is just right for one electrical circuit may be too much or too little for another.

What is the function of a fuse in an electrical circuit?

Fuse (electrical) In electronics and electrical engineering, a fuse is an electrical safety device that operates to provide overcurrent protection of an electrical circuit. Its essential component is a metal wire or strip that melts when too much current flows through it, thereby interrupting the current.

What are the requirements of a fuse?

One of the chief requirements of a fuse is reliability. You want it to do nothing until it is called upon to function. You do not want your bomb to go off unexpectedly. You do not want your circuit to lose power unnecessarily. You also want it to act in a timely manner.

Does the load of the circuit determine fuse size?

Actually, the load of the circuit should have nothing to do with choosing a fuse size. The fuse size should be based on the SMALLEST wire (largest gage number) in the circuit. For those of you who want to get right down to business, let’s not waste any more time, here’s how you’d go about calculating fuse size correctly in 3 simple steps: