MCQ
Consider the following statements and select the correct statement(s).
  1. Electric field lines are always perpendicular to equipotential surface.
  2. No two equipotential surfaces can intersect each other.
  3. Electric field lines are in the direction of tangent to an equipotential surface.
    • A
      I only.
    • B
      II only.
    • C
      I and II.
    • D
      I, II and III.

    Answer

    1. I only.

    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 relation among u, v and f for a mirror is:

    An inductive coil has resistance of $100\Omega$ When an ac signal of frequency 1000 Hz is fed to the coil, the applied voltage leads the current by 45. What is the inductance of the coil?
    One conducting U tube can slide inside another as shown in figure, maintaining electric contacts between the tubes. The magnetic field B is perpendicular to the plane of the figure. If each tube moves towards the other at a constant speed v, then the emf induced in the circuit in terms of B, l and v where l is the width of each tube, will be

    An L-R circuit has a cell of e.m.f. E, which is switched on at time t = 0. The current in the circuit after a long time will be

    (a) Zero

    (b)  

    (c)   

    (d)  

    Half life of a radioactive substance is T.  The time taken for all the nuclei to disintegrate will be

    (a) 2T       

    (b) T2

    (c) 4T

    (d) Uncertain

    Two coherent sources whose frequency ratio is $100: 1$ used to generate interference fringes. The ratio of maximum and minimum intensity in fringes will be :

    Assertion :  Diamond glitters brilliantly.

    Reason    : Diamond does not absorb sunlight.

    (a) If both assertion and reason are true and the reason is the correct explanation of the assertion.

    (b) If both assertion and reason are true but reason is not the correct explanation of the assertion.

    (c) If assertion is true but reason is false.

    (d) If the assertion and reason both are false.

    Forty electric bulbs are connected in series across a 220 V supply. After one bulb is fused, the remaining 39 are connected again in series across the same supply. The illumination will be

    (a) More with 40 bulbs than with 39

    (b) More with 39 bulbs than with 40

    (c) Equal in both the cases

    (d) In the ratio of  

    In a permanent magnet at room temperature.
    Equipotentials at a great distance from a collection of charges whose total sum is not zero are approximately.