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Chapter 18: Q3PE (page 664)

To start a car engine, the car battery moves 3.75脳1021 electrons through the starter motor. How many coulombs of charge were moved?

Short Answer

Expert verified

To start a car engine \({\rm{ - 600 C}}\) of charge were moved.

Step by step solution

01

Quantization of charge

According to quantization of charge, all charged objects in the nature are integral multiples of charge on electron or proton.

02

Coulombs of charge moved

The charge moved to start a car engine is calculated by using quantization of charge.

According to the quantization of charge,

Q = ne

Here, Q is the total charge moved, n is the number of electrons move to start a car engine n=3.75脳1021 ,ande is the charge on electron \(\left( {{\rm{e = - 1}}{\rm{.6 \times 1}}{{\rm{0}}^{{\rm{ - 19}}}}{\rm{ C}}} \right)\).

Substituting all known values,

Q=3.75脳1021脳脳-1.6脳10-19C=-600C

Hence, to start a car engine -600 C of charge were moved.

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Most popular questions from this chapter

A\(5.00{\rm{ g}}\)charged insulating ball hangs on a\(30.0{\rm{ cm}}\)long string in a uniform horizontal electric field as shown in Figure 18.56. Given the charge on the ball is\(1.00{\rm{ }}\mu {\rm{C}}\), find the strength of the field.

Figure 18.56 A horizontal electric field causes the charged ball to hang at an angle of\(8.00^\circ \).

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