If a body is charged by rubbing it, its weight:

Given below are four statements: 

Choose the correct option:

A metallic particle having no net charge is placed near a finite metal plate carrying a positive charge. The electric force on the particle will be

1.  towards the plate

2.  away from the plate

3.  parallel to the plate

4.  zero.

A positive point charge \(Q\) is brought near an isolated metal cube.

Choose the correct option from the given ones:

A large nonconducting sheet M is given a uniform charge density. Two uncharged small metal rods A and B are placed near the sheet as shown in the figure.

(a) M attracts A
(b) M attracts B
(c) A attracts B
(d) B attracts A

Choose the correct option 

1. (a) , (b) 

2. (c) , (d)

3. (a) , (d)

4. All of the above

Two metal spheres of capacitances \(C_1\) and \(C_2\) carry some charges. They are put in contact and then separated. The final charges \(Q_1\) and \(Q_2\) on them will satisfy;
1.  \(\dfrac{{Q}_{1}}{{Q}_{2}}<\dfrac{{C}_{1}}{{C}_{2}}\)
2.  \(\dfrac{{Q}_{1}}{{Q}_{2}}=\dfrac{{C}_{1}}{{C}_{2}}\)

3.  \(\dfrac{{Q}_{1}}{{Q}_{2}}>\dfrac{{C}_{1}}{{C}_{2}}\)

4.  \(\dfrac{{Q}_{1}}{{Q}_{2}}<\dfrac{{C}_{2}}{\mathrm{C}_{1}}\)