Question
Mention two important conclusions regarding the relation between electric field and electric potential.

Answer

(i) Electric field is in the direction in which the electric potential decreases steepest.
(ii) The magnitude of electric field is given by the change in the magnitude of potential per unit displacement normal to the equipotential surface at the point.

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Similar questions

Find the maximum kinetic energy of the photoelectrons ejected when light of wavelength 350nm is incident on a cesium surface. Work function of cesium = 1.9eV
Two voltameters, one having a solution of silver salt and the other of a trivalent-metal salt, are connected in series and a current of 2A is maintained for 1.50 hours. It is found that 1.00g of the trivalent-metal is deposited.
  1. What is the atomic weight of the trivalent metal?
  2. How much silver is deposited during this period? Atomic weight of silver is 107.9 g/mole.
Define trans conductance of a transistor.
A telescope has been adjusted for relaxed eye. You are asked to adjust it for least distance of distinct vision, then how will you change the distance between two lenses?
A nut becomes loose and gets detached from a satellite revolving around the earth. Will it land on the earth? If yes, where will it land? If no, how can an astronaut make it land on the earth?
Find the ratio of the magnitude of the electric force to the gravitational force acting between two protons.
Arrange the following electromagnetic radiations in ascending order of their frequencies:
  1. Microwave.
  2. Radio wave.
  3. X-rays.
  4. Gamma rays.
Write two uses of any one of these.
Two metallic wires of the same material have the same length but cross-sectional areas are in the ratio 1 : 2. They are connected (i) in series and (ii) in parallel. Compare the drift velocities of electrons in the two wires in both the cases (i) and (ii).
Figure shows an electrolyte of AgCl through which a current is passed. It is observed that 2.68g of silver is deposited in 10 minutes on the cathode. Find the heat developed in the $20\Omega$ resistor during this period. Atomic weight of silver is 107.9g/mole.

Consider the situation of the previous problem. Take "the table plus the ball" as the system. Friction between the table and the ball is then an internal force. As the ball slows down, the momentum of the system decreases. Which external force is responsible for this change in the momentum?