The variation of electric field with respect to the distance from center of charged conducting spherical shell of radius R is given by :
The Correct Option is B
Solution and Explanation
The correct answer is (B)
Top Questions on Electric Field
- An electron (mass \(9 \times 10^{-31}\) kg and charge \(1.6 \times 10^{-19}\) C) moving with speed \(c/100\) (\(c\) = speed of light) is injected into a magnetic field of magnitude \(9 \times 10^{-4}\) T perpendicular to its direction of motion. We wish to apply a uniform electric field \( \vec{E} \) together with the magnetic field so that the electron does not deflect from its path. (speed of light \(c = 3 \times 10^8\) m/s):
- NEET (UG) - 2025
- Physics
- Electric Field
Given below are two statements: one is labelled as Assertion (A) and the other is labelled as Reason (R).
Assertion (A): Net dipole moment of a polar linear isotropic dielectric substance is not zero even in the absence of an external electric field. Reason
(R): In absence of an external electric field, the different permanent dipoles of a polar dielectric substance are oriented in random directions.
In the light of the above statements, choose the most appropriate answer from the options given below:- JEE Main - 2025
- Physics
- Electric Field
Two large plane parallel conducting plates are kept 10 cm apart as shown in figure. The potential difference between them is $ V $. The potential difference between the points A and B (shown in the figure) is:
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- Physics
- Electric Field
- An electron of mass \( m \) with an initial velocity \( \vec{v} = v_0 \hat{i} (v_0>0) \) enters an electric field \( \vec{E} = -E_0 \hat{k} \). If the initial de Broglie wavelength is \( \lambda_0 \), the value after time \( t \) would be:
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- Electric Field
- Consider a circular loop that is uniformly charged and has a radius $ \sqrt{2} $. Find the position along the positive $ z $-axis of the cartesian coordinate system where the electric field is maximum if the ring was assumed to be placed in the $ xy $-plane at the origin:
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- Physics
- Electric Field
Questions Asked in CUET exam
- Statements:
1. All engineers are intelligent.
2. Some intelligent people are lazy.
Conclusions:
I. Some engineers are lazy.
II. All intelligent people are engineers.
Choose the correct option:- CUET (UG) - 2025
- Syllogism
Three friends, P, Q, and R, are solving a puzzle with statements:
(i) If P is a knight, Q is a knave.
(ii) If Q is a knight, R is a spy.
(iii) If R is a knight, P is a knave. Knights always tell the truth, knaves always lie, and spies sometimes tell the truth. If each friend is either a knight, knave, or spy, who is the knight?- CUET (UG) - 2025
- Logical Reasoning
- Statements:
All cats are dogs.
Some dogs are birds.
Conclusions:
I. Some cats are birds.
II. Some dogs are cats.
Which conclusions follow?- CUET (UG) - 2025
- Syllogism
- A train crosses a platform 200 m long in 36 seconds and a pole in 18 seconds. Find the speed of the train.
- CUET (UG) - 2025
- Speed, Time and Distance
- What is the value of \(x\)?
Statement I: \(2^2 + 5x + 6 = 0\)
Statement II: \(2^2 + 7x + 12 = 0\)- CUET (UG) - 2025
- Data Sufficiency