Home
Class 12
PHYSICS
A : A finite size charged body may behav...

A : A finite size charged body may behave like a point charge if it produces an inverse square electric field.
R : Two charged bodies may be considered as point charges if their distance of separation is very large compared to their dimensions.

A

If both Assertion & Reason are true and the reason is the correct explanation of the assertion, then mark (1).

B

If both Assertion & Reason are true but the reason is not the correct explanation of the assertion, then mark (2).

C

If Assertion is true statement but Reason is false, then mark (3).

D

If both Assertion and Reason are false statements, then mark (4).

Text Solution

AI Generated Solution

The correct Answer is:
To analyze the assertion and reason statements in the question, we can break down the concepts step by step. ### Step 1: Understanding the Assertion The assertion states that "A finite size charged body may behave like a point charge if it produces an inverse square electric field." - **Explanation**: A point charge is defined as a charge that is so small that its size can be neglected when calculating the electric field it produces. The electric field \( E \) produced by a point charge \( Q \) at a distance \( r \) is given by the formula: \[ E = \frac{kQ}{r^2} \] where \( k \) is Coulomb's constant. If a finite-sized charged body produces an electric field that follows the inverse square law (i.e., it behaves according to the same formula), it can be treated as a point charge for practical purposes. ### Step 2: Understanding the Reason The reason states that "Two charged bodies may be considered as point charges if their distance of separation is very large compared to their dimensions." - **Explanation**: When two charged bodies are far apart relative to their sizes, the electric field they produce at each other's location can be approximated as if they were point charges. This is because the effect of their physical size becomes negligible compared to the distance separating them. Thus, the forces between them can be calculated using the point charge approximation. ### Step 3: Evaluating the Truth of Each Statement - Both the assertion and the reason are true: - The assertion is true because a finite-sized charged body can behave like a point charge if it produces an inverse square electric field. - The reason is also true because the approximation of treating two charged bodies as point charges holds when they are sufficiently far apart. ### Step 4: Determining the Relationship Between Assertion and Reason - However, while both statements are true, the reason does not explain the assertion. The assertion focuses on the behavior of a single charged body, while the reason discusses the relationship between two charged bodies. ### Conclusion Thus, the correct conclusion is that both the assertion and reason are true, but the reason is not the correct explanation for the assertion. ### Final Answer **Both Assertion and Reason are true, but Reason is not the correct explanation for Assertion.** ---
Promotional Banner

Similar Questions

Explore conceptually related problems

A Point charge produces an electric field in room. What is its direction?

A point charge is brought in an electric field. The electric field at a near by point

An electric dipole is kept in the electric field produced by a point charge

Assertion A point charge produces a uniform electric field. Reason Due to a point charge, electric lines of forces are parallel and equidistant.

The electric field of a point charge is uniform. Is it true or false?

An electric dipole is placed in an electric field generated by a point charge

A charge particle q is projected in an electric field produced by a fixed point charge Q as shown in figure. Mark the correct statements.

A point charge q is placed at the origin . How does the electric field due to the charge very with distance r from the origin ?

A point charge is taken from a point A to a pint B in an electric field. Does the work done by the electric field depend on the path of the charge ?

A point charge q is rotated along a circle in the electric field generated by anotherj point charge Q. The work done by the electric field on the rotatin charge in one complete revolution is