Question 1 :
The existence of a negative charge on a body implies that it has:

Question 2 :
A steady curent i is flowing through a conductor&nbsp;of uniform cross-section. Any segment of the&nbsp;conductor has<br>

Question 4 :
A charged rod is brought near a negatively charged pith ball electroscope. What conclusion would you draw about the charge on the rod if pith ball moves towards the rod ?

Question 5 :
'When two bodies are rubbed together, charges on them are ___________'.<br>

Question 6 :
A cat's skin acquires _______ charge when rubbed with ebonite rod.<br/><br/>

Question 8 :
Which of the following charge is acquired by silk&#160;when the silk is rubbed with glass?<br/>

Question 10 :
The charge on a body is +1 C. Find the number&#160;of electrons in excess or deficit on the body.

Question 11 :
Point $P$ lies on the axis of a dipole. If the dipole is rotated by ${ 90 }^{ \circ&nbsp; }$ anticlockwise, the electric field vector $\overrightarrow { E } $ at $P$ will rotate by :<br>

Question 13 :
Opening up of strips of an electroscope is an indication of:

Question 14 :
A negatively charged object attracts a suspended light conducting ball. The light conducting ball can be :<div><span>1. negatively charged</span></div><div><span>2. neutral</span></div><div><span>3. positively charged</span></div>

Question 15 :
Two metallic spheres of radii $1cm$ and $3cm$ are given charges of $-1\times {10}^{-2}C$ and $5\times {10}^{-2}C$, respectively. If these are connected by a conducting wire, the final charge on the bigger sphere is-

Question 16 :
<br>When electric current passes through a bucket full of water , lot of bubbling is observed. This suggests that the type of supply is

Question 17 :
An electric dipole of dipole moment $p$ is placed in a uniform electric field $E$ in stable equilibrium position. Its moment of inertia about the centroidal axis is $I$. If it is displaced slightly from its mean position find the period of small oscillations.<span><br></span>

Question 18 :
An electric dipole of dipole moment p and rotational inertia I is allowed to oscillate about its equilibrium position in a uniform electric field E. Then, for small amplitudes the frequency of oscillation will be

Question 19 :
An electric dipole (dipole moment p) is placed in a uniform electric field in stable equilibrium position at rest. Now it is rotated by a small angle and released . The time after which it comes to the equilibrium&#160;position again (for first time) is $t$. If the moment of inertia of the dipole about the axis of rotation is $x\dfrac{t^{2}pE}{\pi^{2}},$ then $x$ is:<br/>

Question 20 :
A and B are two points on the axis and the perpendicular bisector, respectively, of an electric dipole. A and B are far away from the dipole and at equal distances from it. The fields at A and B are $\vec E_A $ and $\vec E_B$. Then: