The thinner the fuse wire, the greater its capacity.

Q. Four fuse wires are made of different materials. If they are of the same length and thickness, the fuse wire made of which among the following materials will have the highest current carrying capacity?

Q. $\left(i\right)$ What happens to the resistivity of semi-conductors with the increase of temperature?
$\left(ii\right)$ For a fuse, higher the current rating ________ is the fuse wire. (Thicker / Thinner)

Q. Sitar maestro Ravi Shankar is playing sitar on its strings, and you, as a physicist (unfortunately without musical ears!), observed the following oddities.
I. The greater the length of a vibrating string, the smaller its frequency.
II. The greater the tension in the string, the greater is the frequency.
III. The heavier the mass of the string, the smaller the frequency.
IV. The thinner the wire, the higher its frequency.
The maestro signalled the following combination as correct one.

Q.

Complete the following sentences :

(a) A fuse is a short piece of wire of high ___ and of the material of low ___.

(b) A fuse wire is made of an alloy of ___ and ___ if the current in a circuit exceeds the current rating of the fuse wire, it ___.

(c) A fuse is connected in ___ with the ___ wire.

(d) Higher the current rating, ___ is the fuse wire.