Which of the following statements is true about electric forces

Which of the following statements are true statements about electric force ? Electric forces can only act between charged objects - either like-charged or oppositely-charged. Part A: Multiple-Multiple Choice. Electrons are the mobile charge carriers in an electric circuit. In an electric circuit of an automobile, .

Electrical as well as gravitational effects can be thought to be caused by fields.

A), The field concept is often used to describe contact forces.

B), A gravitational or electrical field does not always exist in the space around an object. A), The positive charge in an atomic nucleus is due to the protons it contains. B), All protons have the same charge. C), Protons and electrons have charges equal in magnitude although opposite in sign. D), Protons and electrons have equal masses.

Which statement is true about the electric forces on the objects? Which one of the following statements concerning the electric force is true ? Two charged objects with identical charges will exert an attractive force on one another. A charged conductor is brought near an uncharged insulator. Both objects will repel each other. Neither object exerts an electrical force on the other.

Consider the following two statements : i. The electrostatic forces on charges will do work if they move the charge from one point to another. For an object to become charge it must either gain or lose . A more massive object has more inertia than a . A positively-charged object is attracted toward another . Complete the following statement : These two potential energies are analogous to each other because. Which one he following statements is true for Electrical Discharge machining. The material removal takes place due to the melting and evaporation of the workpiece material.

Any electrical conductor can be machined by this method. Some light oil like transformer oil or kerosene oil is used as dielectric. Open Hint for Question in a.