Question
Which among the curves shown in figure cannot possibly represent electrostatic field lines?

Answer

  1. Field lines are wrongly drawn because electric field lines must be normal to the surface of the conductor at each point.
  2. Field lines are wrongly drawn because field lines cannot start from a negative charge.
  3. Field lines are correctly drawn, because they are originating from a positive charge.
  4. Field lines are wrongly drawn as the field lines cannot intersect.
  5. Field lines are wrongly drawn because they cannot form closed loops.

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

Calculate the maximum kinetic energy of the beta particle emitted in the following decay scheme:
$\text{ }^{12}\text{N}\rightarrow{ }^{12}\text{C}^*+\text{e}^++\text{v}$
$\text{ }^{12}\text{C}^*\rightarrow\text{ }^{12}\text{C}+\gamma(4.43\text{MeV}).$
The atomic mass of 12N is 12.018613u.
A 60μF capacitor is connected to a 110V, 60Hz ac supply. Determine the rms value of the current in the circuit.
Explain the parallel connection of capacitors.
A certain sample of a radioactive material decays at the rate of 500 per second at a certain time. The count rate falls to 200 per second after 50 minutes.
  1. What is the decay constant of the sample?
  2. What is its half-life?
A convex lens of focal length 20 cm is placed coaxially with a convex mirror of radius of curvature 20 cm. The two are kept at 15 cm from each other. A point object lies 60 cm in front of the convex lens. Draw a ray diagram to show the formation of the image by the combination. Determine the nature and position of the image formed.
Consider a point at the focal point of a convergent lens. Another convergent lens of short focal length is placed on the other side. What is the nature of the wavefronts emerging from the final image?
A solenoid has a core of a material with relative permeability 400 . The windings of the solenoid are insulated from the core and carry a current of 2A. If the number of turns is 1000 per metre, calculate (a) $H$, (b) $M$, (c) $B$ and (d) the magnetising current $I_m$.
The two graphs are drawn below, show the variations of electrostatic potential (V) $\frac{1}{\text{r}}$ (r being the distance of field point from the point charge) for two point charges q1 and q2.
  1. What are the signs of the two charges?
  2. Which of the two charges has the larger magnitude and why?
​​​​​​​​​​​​​​
A light ray is incident at an angle of 45° with the normal to a $\sqrt{2}\text{cm}$ thick plate $(\mu = 2.0)$. Find the shift in the path of the light as it emerges out from the plate.
A circular coil of wire consisting of 100 turns, each of radius 8.0 cm carries a current of 0.40 A. What is the magnitude of the magnetic field B at the centre of the coil?