STANDARD Physics Electric Field MCQ Question
−1 × 10⁻⁶ C charge is on a drop of water having mass 10⁻⁶ kg. What electric field should be applied on the drop so that it is in the balanced condition with its weight?
10 V/m upward
10 V/m downward
0.1 V/m downward
0.1 V/m upward
Correct Answer
Detailed Explanation
The electric force must balance the gravitational force. F = mg = qE, where E = mg/q. Substituting the values, E = (10⁻⁶ kg * 9.8 m/s²) / (10⁻⁶ C) = 9.8 V/m downward.
Found an issue with this question?
Related Questions
More from Electrostatics
A conducting sphere of radius R carrying charge Q lies inside an uncharged conducting shell of radius 2R. If they are joined by a metal wire, the amou...
Assertion : Electric potential of earth is taken zero. Reason : No electric field exists on earth surface.
The equivalent capacitance of the system shown in the following circuit is: