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Chapter 21: Q25P (page 626)

How many electrons would have to be removed from a coin to leave it with a charge of +1.0脳10鈭�7C ?

Short Answer

Expert verified

The number of electrons to be removed is6.3脳1011.

Step by step solution

01

The given data 

Charge of the coin, q=+1.00脳10鈭�7C

02

Understanding the concept of quantization of charge 

As we know that a charged particle emits energy in the form of packets, thus, the number of electrons emitted or present can be considered as multiple factors of the electronic charge.

Formula:

The number of electrons present, n=q/e (1)

03

Calculation of the number of electrons

Using the equation (1) and the given data, we can get the number of electrons removed from the coin as given:

n=1.00脳10鈭�7C1.60脳10鈭�19C=6.3脳1011

Hence, the number of electrons removed is 6.3脳1011

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Most popular questions from this chapter

Point charges of +6.0渭颁and 鈭�4.0渭颁are placed on a x-axis, at x=8.0mand x=16m, respectively. What charge must be placed at x=24mso that any charge placed at the origin would experience no electrostatic force?

In Fig. 21-24, three identical conducting spheres initially have the following charges: sphere A,4Q ; sphere B,鈭�6Q ; and sphere C,0 . Spheres Aand Bare fixed in place, with a center-to-center separation that is much larger than the spheres. Two experiments are conducted. In experiment 1, sphere Cis touched to sphere Aand then (separately) to sphere B, and then it is removed. In experiment 2, starting with the same initial states, the procedure is reversed: Sphere Cis touched to sphere Band then (separately) to sphere A, and then it is removed. What is the ratio of the electrostatic force between Aand Bat the end of experiment 2 to that at the end of experiment 1?

Three particles are fixed on an x-axis. Particle 1 of charge q1 is at x=-a, and particle 2 of charge q2is at x=+a. If their net electrostatic force on particle 3 of charge -Qis to be zero, what must be the ratio q1 /q2when particle 3 is at (a)x=+0.500a and (b) x=+1.50a?

In Fig. 21-26, particle 1 of charge q1=鈭�80.0渭颁and particle 2 of charge q2=+40.0渭颁are held at separation L=20.0鈥塩尘on an xaxis. In unit-vector notation, what is the net electrostatic force on particle 3, of charge q3=20.0鈥壩及�, if particle 3 is placed at (a)x=40.0cm and (b) x=80.0鈥塩尘? What should be the (c) xand (d) ycoordinates of particle 3 if the net electrostatic force on it due to particles1 and 2 is zero?

Question: A charged nonconducting rod, with a length of 2.00 mand a cross-sectional area of4.00cm2, lies along the positive side of ax-axis with one end at the origin. The volume charge density is charge per unit volume in coulombs per cubic meter. How many excess electrons are on the rod if 蚁 is (a) uniform, with a value of-4.00渭C/m3, and (b) non-uniform, with a value given byr=bx2, whereb=-2.00渭C/m3?
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