Question
Explain the concept of electric field.

Answer

  1. The space around a charge gets modified when a test charge is brought in that region, it experiences a coulomb force. The region around a charged object in which coulomb force is experienced by another charge is called electric field.
  2. Mathematically, electric field is defined as the force experienced per unit charge.
  3. The coulomb force acts across an empty space (vacuum) and does not need any intervening medium for its transmission.
  4. The electric field exists around a charge irrespective of the presence of other charges.
  5. Since the coulomb force is a vector, the electric field of a charge is also a vector and is directed along the direction of the coulomb force, experienced by a test charge.

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

Draw neat labelled diagram showing energy bands in sodium. Why broadening of higher bands is different than that of the lower energy bands?
Explain the concept of relative velocity along a straight line with the help of an example.
$\hat{ i }$ and $\hat{ j }$ are unit vectors along $X -$ axis and $Y -$ axis respectively. What is the magnitude and direction of the vector $\hat{ i }+\hat{ j }$ and $\hat{ i }-\hat{ j }$ ? What are the components of a vector $\overrightarrow{ A }=2 \hat{ i }+ 3 \hat{ j }$ along the directions of $(\hat{ i }+\hat{ j })$ and $(\hat{ i }-\hat{ j }) ? \ (\text{NCERT})$
Find the value of resistances for the following colour code.
i. Blue Green Red Gold
ii. Brown Black Red Silver
iii. Red Red Orange Gold
iv. Orange White Red Gold
v. Yellow Violet Brown Silver
Water is flowing in a stream with velocity $5 \ km/hr$ in an easterly direction relative to the shore. Speed of a boat relative to still water is $20 \ km/hr.$ If the boat enters the stream heading north, with what velocity will the boat actually travel?
How do we determine strength of magnetic field at a given point due to a magnet? Write down units of magnetic field in SI and CGS system and their interconversion.
State the characteristics of electric lines of force.
Explain ‘mirage’ as an illustration of refraction.
Discuss the vector form of gravitational force between two masses with the help of diagram.
Three equal charges of $10 \times 10^{-8}\ C$ respectively, each located at the corners of a right triangle whose sides are $15\ cm, 20\ cm$ and $25\ cm$ respectively. Find the force exerted on the charge located at the $90^\circ $ angle.