A positively charged ball hangs from a silk thread. We put a positive test charges \(q_o\) at a point and measure \(\frac {F}{q_o}\), then it can be predicted that the electric field strength \(E\)
- \(>\frac {F}{q_o}\)
- \(=\frac {F}{q_o}\)
- \(<\frac {F}{q_o}\)
- cannot be estimated
The Correct Option is A
Solution and Explanation
Top Questions on Electrostatics
- The electrostatic potential on the surface of a uniformly charged spherical shell of radius \( R = 10 \, \text{cm} \) is 120 V. The potential at the centre of the shell, at a distance 5 cm from the centre, and at a distance 15 cm from the centre of the shell are:
- JEE Main - 2025
- Physics
- Electrostatics
- For a short dipole placed at origin \( O \), the dipole moment \( P \) is along the \( x \)-axis, as shown in the figure. If the electric potential and electric field at \( A \) are \( V_0 \) and \( E_0 \) respectively, then the correct combination of the electric potential and electric field, respectively, at point \( B \) on the \( y \)-axis is given by:
- JEE Main - 2025
- Physics
- Electrostatics
Match List - I with List - II:
List - I:
(A) Electric field inside (distance \( r > 0 \) from center) of a uniformly charged spherical shell with surface charge density \( \sigma \), and radius \( R \).
(B) Electric field at distance \( r > 0 \) from a uniformly charged infinite plane sheet with surface charge density \( \sigma \).
(C) Electric field outside (distance \( r > 0 \) from center) of a uniformly charged spherical shell with surface charge density \( \sigma \), and radius \( R \).
(D) Electric field between two oppositely charged infinite plane parallel sheets with uniform surface charge density \( \sigma \).List - II:
(I) \( \frac{\sigma}{\epsilon_0} \)
(II) \( \frac{\sigma}{2\epsilon_0} \)
(III) 0
(IV) \( \frac{\sigma}{\epsilon_0 r^2} \) Choose the correct answer from the options given below:- JEE Main - 2025
- Physics
- Electrostatics
- An electric dipole is placed at a distance of 2 cm from an infinite plane sheet having positive charge density \( \sigma \). Choose the correct option from the following.
- JEE Main - 2025
- Physics
- Electrostatics
- A point charge causes an electric flux of \( -2 \times 10^4 \, \text{Nm}^2\text{C}^{-1} \) to pass through a spherical Gaussian surface of 8.0 cm radius, centered on the charge. The value of the point charge is:
- JEE Main - 2025
- Physics
- Electrostatics
Questions Asked in JIPMER MBBS exam
- Speed of particles at 3rd and 8th seconds are 20 m/s are zero respectively. Then average acceleration between 3rd and 8th second will be -
- JIPMER MBBS - 2019
- Kinematics
- What is the value of γ for a monoatomic gas (ideal gas):
- JIPMER MBBS - 2019
- Ideal gas equation
- Write the IUPAC name of the following
- JIPMER MBBS - 2019
- Nomenclature Of Organic Compounds
- Find the current drawn from the battery just after the switch is closed
- JIPMER MBBS - 2019
- An Electric Circuit
- If same charge q is placed inside a sphere and cube having radius 1m and side 2m respectively. What will be the ratio of flux passing through them ?
- JIPMER MBBS - 2019
- Electric Flux