Question
Define Volume density of charge. Write its S.I. unit.

Answer

Volume charge density $ (\rho) $ is the quantity of charge per unit volume, measured in the S.I. system in coulombs per cubic meter (cm-3), at any point in a volume.

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Similar questions

The charge on a parallel plate capacitor varies as $\text{q}=\text{q}_0\cos2\pi\text{vt}$. The plates are very large and close together (area = A, separation = d). Neglecting the edge effects, find the displacement current through the capacitor?
The photoelectric cut$-$off voltage in a certain experiment is $1.5\ \text{V}$ What is the maximum kinetic energy of photoelectrons emitted?
Estimate the number of collisions per second suffered by a molecule in a sample of hydrogen at $\text{STP}.$ The mean free path $($average distance covered by a molecule between successive collisions$) = 1.38 \times 10^{-5}cm.$
Explain simple microscope. Obtain the equation of magnification for the image formed at near point.
State the principle of working of a cyclotron. Write two uses of this machine.
How does the maximum kinetic energy of electrons emitted vary with the work function of the metal?Maximum kinetic energy $E_k = h_ν – W$ Clearly, smaller the work function $W,$ greater is the $E_k$ This means that when work function of a metal increases, maximum kinetic energy of photoelectrons decreases.
State the factor, which controls (i) wavelength of light and (ii) intensity of light, emitted by a LED.
An inductor-coil of inductance $17\ mH$ is constructed from r wire of length 100m and cross-sectional area a copper wire of length $100m$ and cross-sectional area $1mm^2$. Calculate the time constant of the circuit if this inductor is joined across an ideal battery. The resistivity of copper $=1.7\times10^{-8}\Omega-\text{m}.$
A parallel beam of monochromatic light falls normally on a single narrow slit. How does the angular width of the principal maximum in the resulting diffraction pattern depend on the width of the slit?
Can the potential barrier across a p-n junction be measured by simply connecting a voltmeter across the junction?