MCQ
Which of the following about potential difference between any two points is true?
  1. It depends only on the initial and final position.
  2. It is the work done per unit positive charge in moving from one point to other.
  3. It is more for a positive charge of two units as compared to a positive charge of one unit.
    • A
      I only.
    • B
      II only.
    • C
      I and II.
    • D
      I, II and III.

    Answer

    1. I and II.

    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

    By placing the prism in minimum deviation position, images of the spectrum

    (a) Becomes inverted

    (b) Becomes broader

    (c) Becomes distinct

    (d) Becomes intensive

    A person travelling on a straight line moves with a uniform velocity v1 for some time and with uniform velocity v2 for the next equal time. The average velocity is given by:

    1. $\text{v}=\frac{\text{v}_1+\text{v}_2}{2}$

    2. $\text{v}=\sqrt{\text{v}_1\text{v}_2}$

    3. $\frac{2}{\text{v}}=\frac{1}{\text{v}_1}+\frac{1}{\text{v}_2}$

    4. $\frac{1}{\text{v}}=\frac{1}{\text{v}_1}+\frac{1}{\text{v}_2}$

    Two point charges of the same polarities are hung with the help of two threads and kept close. The angle between the threads will be _________ if the system is taken to space.
    Wave nature of light is verified by ___________.

    The figure indicates the energy level diagram of an atom and the origin of six spectral lines in emission (e.g. line no. 5 arises from the transition from level B to A). The following spectral lines will also occur in the absorption spectrum

    (a) 1, 4, 6

    (b) 4, 5, 6

    (c) 1, 2, 3

    (d) 1, 2, 3, 4, 5, 6

    If a charged particle kept at rest experiences an electromagnetic force:

    Switch S of the circuit shown in figure. is closed at t = 0. If e denotes the induced

    emf in L and i, the current flowing through the circuit at time t, which of the following graphs is correct

    (a)

    (b)

    (c)

    (d)

    The velocity factor of a transmission line x. If dielectric constant of the medium is 2.6, the value of x is

    (a) 0.26

    (b) 0.62

    (c) 2.6

    (d) 6.2

    Two batteries A and B each of e.m.f. 2 V are connected in series to an external resistance R = 1 ohm.  If the internal resistance of battery A is 1.9 ohms and that of B is 0.9 ohm, what is the potential difference between the terminals of battery A

    (a) 2 V

    (b) 3.8 V

    (c) Zero

    (d) None of the above

    A motor car is going due north at a speed of 50km/h. It makes a 90° left turn without changing the speed. The change in the velocity of the car is about:
    1. 50km/h towards west.
    2. 70km/h towards south-west.
    3. 70km/h towards north-west.
    4. zero.