MCQ
The wrong statement about electric lines of force is
  • A
    These originate from positive charge and end on negative charge
  • B
    They do not intersect each other at a point
  • C
    They have the same form for a point charge and a sphere
  • They have physical existence

Answer

Correct option: D.
They have physical existence
d
(d)

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

If an electron in a hydrogen atom jumps from the $3^{rd}$ orbit to the $2^{nd}$ orbit, it emits a photon of wavelength $\lambda$. when it jumps from the $4^{th}$ orbit to the $3^{rd}$ orbit, the corresponding wavelength of the photon will be
The electric field at a point on the equatorial plane at a distance $r$ from the centre of a dipole having dipole moment $\overrightarrow{ p }$ is given by, ($r >>$ separation of two charges forming the dipole, $\varepsilon_{0}$ - permittivity of free space)
A potentiometer consists of a wire of length $4\, m$ and resistance $10 \,\Omega$. It is connected to cell of $emf$ $2\, V$. The potential difference per unit length of the wire will be ............ $V/m$
Which of the following is not an application of eddy currents
Einstein's photoelectric equation states that $h v=W+E_k$. In this equatin, $Ek$ refers to the?
In the following circuit, 5W resistor develops 45 J/s due to current flowing through it. The power developed per second across 12 W resistor is
A circular loop of flexible conducting material is kept in a magnetic field directed perpendicularly into its plane. By holding the loop at diametrically opposite points its is suddenly stretched outwards, then
An $ac$ generator produced an output voltage $E = 170\,sin \,377\,t\,volts$, where $ t $ is in seconds. The frequency of $ac$ voltage is......$ Hz$
The relation between $I_p$ and $V_p$ for a triode is $\mathrm{I}_{\mathrm{p}}=\left(0.125 \mathrm{V}_{\mathrm{p}}-7.5\right) \mathrm{mA}$ , Keeping the grid potential constant at 1V, the value of $r_p$ will be
A conducting wire bent in the form of a parabola $y^2 = 2x$ carries a current $i = 2 A$ as shown in figure. This wire is placed in a uniform magnetic field $\vec B =  - 4\,\hat k$ $Tesla$. The magnetic force on the wire is (in newton)