Mell How does a fuse protect a circuit when a short circuit occurs?
FUSES and circuit breakers are ”safety valves” built into electrical circuits to protect the wiring against overheating due to an overload or a short circuit. A fuse or circuit breaker prevents this by ”blowing,” or breaking the circuit, when an overload occurs.
Why do we use fuse wire in electric circuit?
Fuse wires act as a limit to the electric current flowing through it. It prevents damages or overheats, fires etc by fusing and turning off the circuit as when as there is a sudden increase in the circuit.
What is an electric fuse explain how a fuse helps to protect a circuit class 7?
Answer: A fuse is a safety device which limits current in circuit as a result it prevents damages to electrical circuits and possible fires. Fuses used in electrical appliances. In order to make a battery the negative terminal of one cell is connected to the positive terminal of the other cell.
How does fuse work in a circuit?
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. If the current going through the fuse is too great, the wire heats up until it melts and breaks the circuit.
Where is fuse wire used?
a) Fuse wires are used to protect the electrical appliances from the sudden increase in the current, which can damage the appliances. When current flows through a wire or any conductor, heat is generated within the wire due to the current.
What do you mean by electric fuse?
In electronics and electrical engineering, a fuse is an electrical safety device that operates to provide overcurrent protection of an electrical circuit. A fuse is an automatic means of removing power from a faulty system; often abbreviated to ADS (Automatic Disconnection of Supply).
How Does use of a fuse wire?
The fuse breaks the circuit if a fault in an appliance causes too much current to flow. The fuse contains a piece of wire that melts easily. If the current going through the fuse is too great, the wire heats up until it melts and breaks the circuit.
How is the fuse wire connected to any electrical appliance?
The fuse wires do this job. These fuse wires are connected in series with the other components. When the current in the circuit is too much, the heat generated by this current will melt the fuse wire and there is a break in the circuit. Thus, the current is stopped from flowing before it damages the appliances.
How does use of fuse wire protect electrical appliances?
An electrical fuse works by breaking the circuit when there is a fault in an appliance that causes too much current to flow. The wire within the circuit melts due to the heat generated when the current going through the circuit is too great. In this way,fuse wire protect electrical appliances.
What is the function of a fuse in an electric circuit?
fuse in a electric circuit mainly perform following two functions: 1. work normally when the circuit current is normal. 2. interrupt the power supply when excessive current flow through the circuit. In short, the function of fuse is to protect electric circuit from any damage due to fault current.
What causes an electric shock from a fuse?
In a fuse, a piece of wire safely melts and breaks the circuit; in a circuit breaker, a spring opens up a switch. Overloads may be caused by short circuits–accidental direct connections which draw a large current–or by too many appliances on a single outlet circuit. Whenever they happen, find out the cause and remove it! Electric Shock
What happens when an electrical fuse melts?
But when a short circuit or overload occurs, an excessive current will flow through fuse element. This raises the temperatures and fuse element melts very quickly. In this way, electric fuse disconnect the power supply and protect electric circuits or equipment.