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Chapter 16: Q70P (page 670)

What is the electric potential at a location 2.5脳10-9鈥�mfrom an electron?

Short Answer

Expert verified

The value of electric potential is 0.57鈥�V.

Step by step solution

01

Identification of given data

The given data can be listed below,

  • The location of electron is, r=2.5脳10-9鈥�m
02

Concept/Significance of electric potential

The effort done by the field in moving unit positive charge from the reference point to the place where potential is to be found determines electric potential at any point in the field.

03

Determination of the electric potential of electron

The potential of electron is given by,

V=Kqr

Here, K is the coulomb constant whose value is 9脳109鈥�N.m2/C2 , q is the charge on the electron whose value is -1.6脳10-19C , and r is the distance between location and electron.

Substitute all the values in the above expression.

role="math" localid="1657098419012" V=9脳109鈥�N.m2/C2-1.6脳10-19C2.5脳10-9m=0.57V

Thus, the value of electric potential is 0.57鈥�V.

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Most popular questions from this chapter

What is the potential at the centre of a spherical shell ofradius Rthat has a charge Quniformly distributed over its surface? Don鈥檛 do an integral of the electric field; just add up the contributions to the potential by the charges.

A rod uniformly charged with charge \( - q\) is bent into a semicircular arc of radius\(b\), as shown in Figure 16.97. What is the potential relative to infinity at location\(A\), at the center of the arc?

The graph in Figure 16.63 is a plot of electric potential versus distance from an object. Which of the following could be the object?

(1) A neutron, (2) A sodium ion (Na+), (3) A chloride ion (Cl鈭�), (4) A proton, (5) An electron.

An isolated large plate capacitor (not connected to anything) originally has a potential difference of 1000 V with an air gap of 2 mm. Then a plastic slab 1 mm thick, with dielectric constant 5, is inserted in the middle of the air gap as shown in figure 16.96. Calculate the following potential differences and explain your work.

V1-V2=?V2-V3=?V3-V4=?V1-V4=?

You travel along a path from location A to location B, moving in a direction perpendicular to the direction of the net electric field in that region.

What is true of the potential difference VB-VA?

(1)VB-VA>0,(2)VB-VA<0(3)VB-VA=0
See all solutions

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