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Chapter 13: Q1Q (page 539)

What is the relationship between the terms “field” and “force”? What are their units?

Short Answer

Expert verified

The relation between field and the force isE⇀=F⇀q unit of electric field is NC-1.

Step by step solution

01

About electric field and electric force

The electric field of a charge is space around a charge up to where its influence is felt. It is represented with E⇀.

Electric force is defined as the pull or push that an electric charge will experience.

The attractive or repulsive force between the two charges is represented by F⇀.

02

Relation between electric field and electric force

The relationship between the electric field and the electric force is given by E⇀=F⇀q.

The unit for electric force is Newton and it is represented by symbol N.

The unit for charge is coulomb and it is represented by symbol C.

On substituting the units into the relation between electric field and electric force it is concluded that the unit for electric field is Newton per coulomb NC or NC-1

Therefore, the relation is E⇀=F⇀qand unit of electric field is NC-1.

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Most popular questions from this chapter

Where could you place one positive charge and one negative

charge to produce the pattern of the electric field shown in Figure 13.58? (As usual, each electric field vector is drawn with its tail at the location where the electric field was measured.) Briefly explain your choices.

An electron in a region in which there is an electric field experiences a force of ⟨ 8.0×10−17, −3.2×10−16, −4.8 × 10−16⟩ N. What is the electric field at the location of the electron?

A dipole is located at the origin and is composed of charged particles with charge +eand-e , separated by a distance6×10-6 m along the y axis. The +echarge on -y axis. Calculate the force on a proton due to this dipole at a location(0,4×10-8,0) m .

At a given instant in time, three charged objects are located near each other, as shown in Figure 13.57. Explain why the equation

FonQbydipole≈Q(14πε2qsr3)

cannot be used to calculate the electric force on the ball of charge +Q.
Figure 13.57

In the region shown in Figure 13.63 there is an electric field due to a point charge located at the center of the dashed circle. The arrows indicate the magnitude and direction of the electric field at the locations shown

(a) What is the sign of the source charge? (b) Now a particle whose charge is -7×10-9Cis placed at location B. What is the direction of the electric force on the -7×10-9Ccharge? (c) The electric field at location B has the value (2000,2000,0)N/C. What is the unit vector in the direction ofat this location? (d) What is the electric force on the -7×10-9Ccharge? (e) What is the unit vector in the direction of this electric force?
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