Fuse wire is to be used by understanding the amperage correctly. Write down the amperage of the fuse wires that are currently available in the market.

Write down 2 properties of fuse wire.

What are the characteristics of a fuse wire?

When heat is generated , why does the fuse wire melt ?

Observe the diagram and answer the questions below. Calculate the amperage of the fuse to be used in the circuit.

A resistance R is connected to a cell of EMF E and has an internal resistance r as shown in the figure. The voltage across R is measured using and ideal A voltmeter and circuit current is measured by an ammeter. A rheostat of negligible resistance is used to vary the current in the circuit. -Write down the expression for current in the circuit and voltage across R at any instant.

Write down the reasons for the following statements . Fuse wire is melt when electric current increased .

Which are the circumstances that cause high electric current , leading to the melting of fuse wire ?