Fuse wire is used in electric circuit to prevent:Electrical appliances and circuit from high currentthe insulatorUs from electric shockthe ammeter

A group of MYP students are investigating the use of fuse wire to limit electric current. Safety: This experiment involves the use of relatively large electric currents and exposed molten wire. Use appropriate safety equipment at all times, as indicated. Apparatus: Battery, wire, resistor, ammeter, fuse

Why is an electric fuse required in all electrical appliance?

Assertion:safety fuses are made up of materials having a low melting pointreason: safety fuses should be resistent to to electric current

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 .

The diagram shows a fuse.Describe the action of the fuse in a circuit..........................................................................................................................