Question
The safety fuse should have:

Answer

  1. high resistance and low melting point.
Explanation:
The safety fuse should have high resistance and low melting point.

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Similar questions

A freshly prepared radioactive source of half life 2 hr emits radiation of intensity which is 64 times the permissible safe level. The minimum time after which it would be possible to work safely with this source is:
Which of the following is not a correct statement(a) Resistivity of electrolytes decreases on increasing temperature(b) Resistance of mercury falls on decreasing its temperature(c) When joined in series a 40 W bulb glows more than a 60 W bulb(d) Resistance of 40 W bulb is less than the resistance of 60 W bulb
 
 
 
 
Huygens principle of secondary waves:
The nuclear reaction $2_{\mathrm{H}}+2_{\mathrm{H}} \rightarrow 4_{\mathrm{He}} ($mass of deuteron $= 2.0141\ a.m.u.$ and mass of $He = 4.0024\ a.m.u.)$ is
If an electron moves from rest from a point at which potential is $50$ volt to another point at which potential is $70$ volt, then its kinetic energy in the final state will be
A bulb of $100$ watt is hanging at a height of one meter above the centre of a circular table of diameter $4 m.$ If the intensity at a point on its rim is $\mathrm{I}^ 0$, then the intensity at the centre of the table will be
Heat of 80 J is produced in a conductor on passing a current of 2 A for 10 seconds. The resistance of conductor will be:
The characteristic X-ray radiation is emitted, when(a) The electrons are accelerated to a fixed energy(b) The source of electrons emits a monoenergetic beam(c) The bombarding electrons knock out electrons from  the inner shell of the target atoms and one of the outer electrons falls into this vacancy(d) The valence electrons in the target atoms are removed as a result of the collision
 
 
 
 
Which of the following is electromagnetic wave(a) X-rays and light waves(b) Cosmic rays and sound waves(c) Beta rays and sound waves(d) Alpha rays and sound waves
   
   
An electron is ejected from the surface of a long, thick straight conductor carrying a current, initially in a direction perpendicular to the conductor. The electron will: