Find the force between two charges 2nC and 10nC placed at a distance of 5 cm from each other

Two charges are placed a certain distance apart such that the force that each charge experiences is 20 N. If the distance between the charges is doubled, what is the new force that each charge experiences?

Possible Answers:

There is no way to determine the new force

Correct answer:

Explanation:

To solve this problem, we'll need to utilize the equation for the electric force:

We're told that the force each charge experiences is 20 N at a certain distance, but then that distance is doubled. Thus, the new electric force will be:

What is the force experienced by a 

Possible Answers:

The point charge experiences no force

Correct answer:

Explanation:

The equation to find the force from two point charges is called Coulomb's Law.

In this equation, 

Now, we just plug in the numbers. Note: the charge values are in microcoulombs (the Greek letter 

Therefore, the force experienced on either charge is 0.216N of force.

You have two point charges,

Possible Answers:

Correct answer:

Explanation:

The equation for the force between two point charges is as follows:

We have the values for

Therefore, the value for the second charge is 

Two objects in space are placed

Possible Answers:

Correct answer:

 towards each other

Explanation:

Use Coloumb's law:

First, convert the charges into coulombs.

Plug in values into Coulomb's law.

Negative electric forces indicate attractive forces. Alternatively, we can reason that since one charge is positive, and the other is negative, the charges will attract.

If charge 

Possible Answers:

Correct answer:

Explanation:

Using coulombs law to solve

 Where:

Converting 

Plugging values into coulombs law

The magnitude will be the absolute value.

If charge

Possible Answers:

Correct answer:

Explanation:

Using coulombs law to solve

 Where:

 it the first charge, in coulombs.

 is the second charge, in coulombs.

 is the distance between them, in meters

 is the constant of 

Converting  into 

Plugging values into coulombs law

Magnitude will be the absolute value

Charge

Charge 

The distance between their centers,

What is the magnitude of the force on

Possible Answers:

Correct answer:

Explanation:

Using the electric field equation:

Where

Convert 

Magnitude is equivalent to absolute value:

Charge

Charge 

The distance between their centers,

What is the magnitude of the force on

Possible Answers:

Correct answer:

Explanation:

Use Coulomb's law:

Where is 

is the distance, in .

Convert 

Magnitude is equivalent to absolute value:

Charge

Charge 

The distance between their centers,

Determine the magnitude of the electric force on

Possible Answers:

Correct answer:

Explanation:

Use Coulomb's law:

Where is 

 is charge , in

 is charge , in

is the distance, in .

Convert  to and plug in values:

Magnitude is equivalent to absolute value:

Charge

Charge 

The distance between their centers,

What is the magnitude of the force on

Possible Answers:

Correct answer:

Explanation:

Use Coulomb's law:

Where is 

 is charge , in Coulombs

 is charge , in Coulombs

is the distance, in meters.

Convert  to and plug in values:

Magnitude is equivalent to absolute value:

Maria
Certified Tutor

Universidad Interamericana Puerto Rico, Bachelor in Arts, Early Childhood Education.

Kevin
Certified Tutor

University of Washington-Seattle Campus, Bachelor in Arts, Music.

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