Question Text
Question 1 :
The most important safety method used for protecting home appliances from short circuiting or overloading is
Question 2 :
A coil of insulated copper wire is connected to a galvanometer. What will happen if a bar magnet is pushed into the coil?
Question 3 :
State TRUE or FALSE. A wire with a green insulation is usually the live wire of an electric supply
Question 4 :
Why does a compass needle get deflected when brought near a bar magnet?
Question 6 :
Which of the following correctly describes the magnetic field near a long straight wire?
Question 8 :
A positively charged particle (alpha particle) projected towards West is deflected towards North by a magnetic field. The direction of magnetic field is:
Question 9 :
It is established that an electric current through a metallic conductor produces a magnetic field around it. Is there a similar magnetic field produced around a thin beam of moving alpha particles?
Question 11 :
Consider a circular loop of wire lying in the plane of the table. Let the current pass through the loop clockwise. Apply the right hand rule to find out the direction of magnetic field outside the loop.
Question 13 :
It is established that an electric current through a metallic conductor produces a magnetic field around it. Is there a similar magnetic field produced around a thin beam of moving neutrons?
Question 14 :
State TRUE or FALSE. An electric motor converts mechanical energy into electrical energy.
Question 15 :
State TRUE or FALSE. Electric motors are used in electric fans, refrigerators, mixers, etc.
