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$64$ identical drops each charged upto potential of $10\,mV$ are combined to form a bigger dorp. The potential of the bigger drop will be $..........\,mV$
Condenser $A$ has a capacity of $15\,\mu F$ when it is filled with a medium of dielectric constant $15$. Another condenser $B$ has a capacity of $1\,\mu F$ with air between the plates. Both are charged separately by a battery of $100\;V$. After charging, both are connected in parallel without the battery and the dielectric medium being removed. The common potential now is.....$V$
The potential at a point $P$ due to an electric dipole is $1.8\times 10^5\,V$ . If $P$ is at a distance of $50\,cm$ apart from the centre $O$ of the dipole and if $CP$ makes an angle $60^o$ with the positive side of the axial line of the dipole, what is the moment of the dipole?
The effective capacitances of two capacitors are $3\,\mu F$ and $16\,\mu F$, when they are connected in series and parallel respectively. The capacitance of two capacitors are
Two identical capacitors are joined in parallel, charged to potential $V$, separated and then, connected in series, $i.e.$, the positive plate of one is connected to the negative plate of the other. Then
The capacitance of an air filled parallel plate capacitor is $10\,p F$. The separation between the plates is doubled and the space between the plates is then filled with wax giving the capacitance a new value of $40 \times {10^{ - 12}}farads$. The dielectric constant of wax is
A parallel plate capacitor $\mathrm{C}$ with plates of unit area and separation $\mathrm{d}$ is filled with a liquid of dielectric constant $\mathrm{K}=2$. The level of liquid is $\frac{\mathrm{d}}{3}$ initially. Suppose the liquid level decreases at a constant speed $V,$ the time constant as a function of time $t$ is Figure: $Image$