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Why would fuse wires or MCBs be used in a circuit containing electric cells?
Wiki User
∙ 13y ago
Where only a few electric cells are used to supply low values of voltage and current - such as in small battery-powered flashlights, toys, personal music players, cellphones, etc. - no fuses or MCBs (miniature circuit breakers) are necessary because there is very little risk of a fire breaking out in the event that a fault occurs to cause the cells to become short-circuited.
However, where higher voltages and currents are delivered from batteries of cells, such as in modern electrically-powered cars and other vehicles - where battery voltages such as 480 volts or more, delivering full-load currents of 100 amps or more are now used - the inclusion of protective fuses and/or MCBs are certainly necessary. One reason is in order to be sure of breaking the current from the battery in the event of a serious vehicle collision accident or some other fault condition which could easily cause the system and/or its wiring to overheat and/or catch on fire.
For the same reasons, because of the sizes of the voltages and currents which are used, fuses and MCBs are fitted to protect AC (alternating current) service systems.
Wiki User
∙ 13y ago
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What makes electric charges move through wires in an electric circuit?
A voltage.
When wires are connected to the terminals of a battery. what causes electric current in the circuit?
The resistance of the load is what causes an electric current to flow in a circuit.
Why fuse wires are not used in a circuit containing electric circuit?
The size and composition of fuse wire is designed to "burn through" in an over current situation. That works fine as long as the current is lower than the fused rating. If you were to use the wire in the circuit then all your wire would essentially disintegrate in an over current situation.
What is the third part of an electric circuit besides the wires and the load?
i think it may be energy source
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Define the parts of the electric circuit?
The parts in an electric circuit are as follows: wires that contain two D-cells, a light bulb, and a switch, the D-cells are the energy source, the bulb is the load, the switch controls the flow of electric charges and the connecting wires provide a complete path that joins all the parts together.
A break in the wires of an electric current will the circuit and the current?
A break in the wires of an electric current will break or cut the circuit and stop the current from flowing.
How many wires have electric circuit?
It depends! IDIOT
What makes electric charges move through wires in an electric circuit?
A voltage.
When the wires are connected to the terminals of the battery what causes electric current in a circuit?
The resistance of the load is what causes an electric current to flow in a circuit.
When wires are connected to the terminals of a battery. what causes electric current in the circuit?
The resistance of the load is what causes an electric current to flow in a circuit.
What is an electric circuit with two or more path?
Is a parallel circuit whit 2 or more wires
Give example of pictures in electric circuit?
There are no pictures in electric circuit, only symbols, so an example does not exist.
What can connect all the components in a circuit so that an electric current can flow?
Wires
What are the some parts of an electric circuit?
Battery, switch, wires, lightbulb, etc. Those are SOME parts of a circuit....
What is the third part of an electric circuit besides the wires and the load?
i think it may be energy source
Why fuse wires are not used in a circuit containing electric circuit?
The size and composition of fuse wire is designed to "burn through" in an over current situation. That works fine as long as the current is lower than the fused rating. If you were to use the wire in the circuit then all your wire would essentially disintegrate in an over current situation.
