Question
Explain the vector form of Coulomb's law and write its important facts.

Answer

SELF

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

A circular coil of 200 turns has a radius of 10cm and carries a current of 2.0A.
  1. Find the magnitude of the magnetic field. B at the centre of the coil.
  2. At what distance from the centre along the axis of the coil will the field B drop to half its value at the centre? $\big(\sqrt[3]{4}=1.5874\ ...\big)$
A person travelling in a fast spaceship measures the distance between the earth and the moon. Is it the same, smaller or larger than the value quoted in this book?
A neutron star has a density equal to that of the nuclear matter. Assuming the star to be spherical, find the radius of a neutron star whose mass is 4.0 × 1030kg (twice the mass of the sun).
Seven homogeneous bricks, each of length L, are arranged as shown in figure. Each brick is displaced with respect to the one in contact by $\frac{\text{L}}{10}.$ Find the x-coordinate of the centre of mass relative to the origin shown.

A current of 1.0A exists in a copper wire of cross-section 1.0mm2. Assuming one free electron per atom, calculate the drift speed of the free electrons in the wire. The density of copper is 9000kg/m-3.
The energy of a silver atom with a vacancy in K shell is 25.31keV, in L shell is 3.56keV and in M shell is 0.530keV higher than the energy of the atom with no vacancy. Find the frequency of $\text{K}_\alpha\text{K}_\beta$ and $\text{L}_\alpha$ X-rays of silver.
A long, straight wire carries a current i. Let B1, be the magnetic field at a point Pat a distance d from the wire. Consider a section of length l of this wire such that the point P lies on a perpendicular bisector of the section. Let B2 be the magnetic field at this point due to this section only. Find the value of $\frac{\text{d}}{\text{l}}$ so that B2 differs from B1, by 1%.
An LR circuit contains an inductor of 500mH, a resistor of $25.0\Omega$ and emf 5.00 V in series. Find the potential difference across the resistor at.
  1. 20.0ms
  2. 100ms and
  3. 1.00s
Both the capacitors shown in figure are made of square plates of edge a. The separations between the plates of the capacitors are d1 and d2 as shown in the figure. A potential difference V is applied between the points a and b, An electron is projected between the plates of the upper capacitor along the central line. With what minimum speed should the electron be projected so that it does not collide with any plate? Consider only the electric forces.

A car travelling at 60km/h overtakes another car travelling at 42km/h. Assuming each car to be 5.0m long, find the time taken during the overtake and the total road distance used for the overtake.