Question 1 :
The intensity of electric field E due to charge Q at distance r.<br>
Question 2 :
The capacity of a parallel plate air condenser is $2\ \mu F$. If a dielectric of dielectric constant $4$ is introduced between the plates, its new capacity is:
Question 3 :
An electric dipole has the magnitude of its charge as $q$ and its dipole moment is $p$. It is placed in uniform electric field $E$. If its dipole moment is along the direction of the field, the force on it and its potential energy are respectively
Question 4 :
<p class="wysiwyg-text-align-left"><span class="wysiwyg-font-size-small"><span class="wysiwyg-font-size-small">The charge stored in a capacitor is $20\; \mu C$ and the potential difference across the plates is 500 V. Its capacity is :<br/></p>
Question 5 :
Two capacitors of capacity $C_1$ and $C_2$ are connected in parallel, then the equivalent capacity is:
Question 6 :
When a thin mica sheet is placed between the plates of a condenser then the amount of charge, so compared to its previous value, on its plates will become:
Question 7 :
Work done in moving an electric charge <i>q </i>in an electric field does not depend upon :
Question 8 :
The capacity of a condenser is 20$\mu F$ $\displaystyle $ and the potential is 20 V. The energy released an discharging it fully will be
Question 10 :
Essential difference between electrostatic shielding by a conducting shell and magnetic shielding is due to
Question 11 :
<strong>If $2\%$ of the main current is to be passed through a galvanometer of resistance $G$, then resistance of the shunt required is </strong><br/>
Question 12 :
In cyclotron, for a given magnet, radius of the semicircle traced by positive ion is directly proportional to__________. (v=velocity of positron ion)<br/>
Question 13 :
Best method to increase the sensitivity of the moving coil galvanometer is to decrease<br/>
Question 15 :
An electron enters a region where magnetic field (B) and electric field (E) are mutually perpendicular, then
Question 16 :
The restoring couple in the moving coil galvanometer is due to<br/>
Question 17 :
If a velocity has both perpendicular and parallel components while moving through a magnetic field, what is the path followed by a charged particle?
Question 18 :
The coil of the moving coil galvanometer is wound over an aluminium frame<br/>
Question 19 :
A device used for detecting small currents due to changing magnetic field is known as:
Question 20 :
The radial magnetic field is used in a suspendedcoil galvanometer to provide<br>