PHYSICS MODULE 1.1

When any neutral conductor is made charged, its mass .......

• will increase

• will decrease

• may increase or decrease

• will remain constant

Static electricity is produced due to .......

• Friction

• induction

• electric current

• Charge

A comb rubbed with dry hair, can attract small pieces of paper because ......

• comb is a conductor

• paper is a conductor.

• atoms of paper get polarised by charged comb.

• comb attains the property of magnetism.

Electric force is exerted between two separated charges because electric charge is ...... of matter

• external

• not a property at all

• internal

• electric

When some charge is placed on a good conductor,

• it remains at the same position.

• it goes at the centroid of a conductor.

• it remains at the surface of a good conductor

• none of above.

......... no. of electrons have charge equal to 1 coulomb.

In nature, amount of electric charge, possessed by an isolated system is always ......

• zero.

• equal to multiple of square-root of fundamental charge.

• equal to integer multiple of fundamental charge.

• equal to multiple of square of fundamental electric charge.

When a positively charged rod is brought near to electrically neutral good conductor, then that good

conductor

• will become positively charged

• will become negatively charged.

• will remain neutral only.

• none of above.

For making any neutral body positively charged, we have to ......

• deposit electrons on its surface.

• remove electron from its surface.

• remove protons from it.

• remove neutrons from it.

A spherical shell and a solid sphere, made up of same material and having same radii, are charged

to their maximum capacity. If charges on their surfaces are respectively, q1 and q2 then ......

• q1 < q2

• q1 > q2

• q1 = q2

• nothing can be said