Question:
A vertical electric field of magnitude 4.9×105 NC-1 just prevents a water droplet of mass 0.1 g from falling. What is the charge on the droplet? Take acceleration due to gravity 9.8 ms-2.
A vertical electric field of magnitude 4.9×105 NC-1 just prevents a water droplet of mass 0.1 g from falling. What is the charge on the droplet? Take acceleration due to gravity 9.8 ms-2.
Updated On: Mar 27, 2025
- 2.0×10-9 C
- 2.0×10-6 C
- 5.0×105 C
- 5.0×106 C
Hide Solution
Verified By Collegedunia
The Correct Option is A
Solution and Explanation
The correct option is (A): 2.0×10-9 C
Was this answer helpful?
0
0
Top Questions on Electromagnetic Waves
- Estimate the ratio of shortest wavelength of radio waves to the longest wavelength of gamma waves.
- CBSE CLASS XII - 2025
- Physics
- Electromagnetic Waves
- A wire is cut across a flux of \( 0.2 \times 10^{-2} \) weber in 0.12 seconds. What is the e.m.f. induced in the wire?
- PSEB XII - 2025
- Physics
- Electromagnetic Waves
- The laws of electromagnetic induction have been used in the construction of:
- PSEB XII - 2025
- Physics
- Electromagnetic Waves
- Which has the longest wavelength?
- PSEB XII - 2025
- Physics
- Electromagnetic Waves
- The electric field in a plane electromagnetic wave is given by \(E_z = 60 \cos(5x + 1.5 \times 10^{10} t)\) V/m. Then expression for the corresponding magnetic field (\(B_y\)) is (here subscripts denote the direction of the field) is:
- NEET (UG) - 2025
- Physics
- Electromagnetic Waves
View More Questions
Questions Asked in CUET exam
- Find the ratio of de-Broglie wavelengths of deuteron having energy E and \(\alpha\)-particle having energy 2E :
- CUET (UG) - 2026
- Dual nature of radiation and matter
- The de-Broglie wavelength associated with a ball of mass 150 g traveling at 30.0 m/s would be
- CUET (UG) - 2025
- de broglie hypothesis
- A clock shows the time as 3:15. What is the angle between the hour and minute hands?
- CUET (UG) - 2025
- Clock and Calendar
- If 36: 84 :: 42: X, then the value of X, is:
- CUET (UG) - 2025
- Ratio and Proportion
- The angles of elevation of the top of a tower from two points at a distance of 5 meters and 20 meters along the same straight line from the base of the tower, are complementary. Find the height of the tower.
- CUET (UG) - 2025
- Trigonometry
View More Questions