MCQ
The force that a unit positive charge would experiences if placed at that point is called as _____ due to charge at a point in space.
  • A
    Electric charge.
  • B
    Electric field.
  • C
    Both a and b.
  • D
    None.

Answer

  1. Electric field.

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

When a coil is moved or rotated relative a fixed magnet then.
An object is released from rest. The time it takes to fall through a distance h and the speed of the object as it falls through this distance are measured with a pendulum clock. The entire apparatus is taken on the moon and the experiment is repeated:
  1. The measured times are same.
  2. The measured speeds are same.
  3. The actual times in the fall are equal.
  4. The actual speeds are equal.

A metallic ring is attached with the wall of a room. When the north pole of a magnet is brought near to it, the induced current in the ring will be

(a)  First clockwise then anticlockwise

(b)  In clockwise direction

(c)  In anticlockwise direction

(d)  First anticlockwise then clockwise

If a unit positive charge is taken from one point to another over an equipotential surface, then:

The number of turns and radius of cross-section of the coil of a tangent galvanometer are doubled. The reduction factor K will be

(a) K 

(b) 2K

(c) 4K    

(d) K/4

A battery of e.m.f. E and internal resistance r is connected to a variable resistor R as shown here. Which one of the following is true

(a) Potential difference across the terminals of the battery is maximum when R = r

(b) Power delivered to the resistor is maximum when R = r

(c) Current in the circuit is maximum when R = r

(d) Current in the circuit is maximum when R >> r

A proton and an electron both moving with the same velocity v enter into a region of magnetic field directed perpendicular to the velocity of the particles. They will now move in circular orbits such that

(a) Their time periods will be same

(b) The time period for proton will be higher

(c) The time period for electron will be higher

(d) Their orbital radii will be same

As the quantum number increases, the difference of energy between consecutive energy levels?
Relative electrical conductivity and relative magnetic permeability of a substance is $\in_r$ and $\mu_r$ What are the probable values of these quantities for any dimagnetic substance?

A coil of inductance 40 henry is connected in 0series with a resistance of 8 ohm and the combination is joined to the terminals of a 2 volt battery. The time constant of the circuit is

(a) 40 seconds

(b) 20 seconds

(c) 8 seconds

(d) 5 seconds