The diagram shows a fuse.Describe the action of the fuse in a circuit..........................................................................................................................
Question
The diagram shows a fuse.Describe the action of the fuse in a circuit..........................................................................................................................
Solution
A fuse is a safety device used in an electrical circuit. It consists of a wire or a strip of metal which melts when too much current flows through it. Here are the steps describing the action of a fuse in a circuit:
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Normal Operation: When the circuit is functioning normally, the current flowing through it is within the fuse's rated capacity. This means the fuse wire remains intact and electricity can flow through the circuit as intended.
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Similar Questions
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Formulate a relationship between the current rating of the fuse wire in a circuit and the amount of current the circuit can carry.
fuse or a circuit breaker may be used to protect the circuit.One type of circuit breaker is a Residual Current Circuit Breaker (RCCB).(a) (i) Use the correct answer from the box to complete the sentence.earth live neutralA fuse is connected in the ........................................... wire.(1)(ii) Use the correct answer from the box to complete the sentence.are bigger are cheaper react fasterRCCBs are sometimes preferred to fuses because they........................................... .(1)(iii) RCCBs operate by detecting a difference in the current between two wires.Use the correct answer from the box to complete the sentence.earth and live earth and neutral live and neutralThe two wires are the .............................................................................. wires.(1)(b) An RCCB contains an iron rocker and a coil.A student investigated how the force of attraction, between a coil and an iron rocker,varies with the current in the coil.She supported a coil vertically and connected it in an electrical circuit, part of whichis shown in the figure below .
AimTo observe how a fuse worksEquipment• strands of steel wool• cork• two pins• power supply• connecting wires• 2.5 volt globeMethod1 Leaving the power pack turned off, construct the circuit inFigure 7.3.21.2 Gradually increase the power supply voltage from zero,stopping when the fuse melts or the voltage reaches 3 volts,whichever comes first.Questions1 State the voltage at which the fuse melted.2 Explain why a globe was included in the circuit.3 Describe the role of a fuse in a circuit.4 Propose ways in which this fuse could be modified to allowgreater current before melting.
Which diagram most likely shows a circuit that will light up the bulb ?A.B.C.D
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