Coulomb

Coulomb

By Stacy King

A very large unit of electrical charge​

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These charges hold atoms together​

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Coulomb

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Distance of charges affect on ​electrostatic force

q₁= 1st objects charge

q₂= 2nd objects charge

r = distance

k ​= 9.00 * 10¹⁰ Nm²/C²

Coulomb's Law

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Multiple Choice

If q₁ was doubled what would be the effect on the Force?

• Doubled

• Quadrupled

• Half

• 1/4

​Charges can be either positive or negative.

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Multiple Choice

If r was doubled what would be the effect on the Force?

• Doubled

• Quadrupled

• Half

• 1/4

​I = Q/t

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The current is equal to the charge divided by the time ​

Working with Charges

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Multiple Choice

A current of 0.5 A flows in a circuit. Calculate the charge flowing through the circuit in one minute.

• 0.5 C

• 30 C

• 120 C

Multiple Choice

How much charge must pass by a point in 10 s for the current to be  0.50 A? 

• 0,05C
• 5,0C
• 20C
• 2,0C

Multiple Choice

A charge of 48 C flows for 6s. What is the current?

• 8 A

• 288 A

• 8 V

• 288 V

The power to move electrical charges ​(the ability to do work)

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Joules or J​

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Electrical Energy

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Multiple Choice

10. A lamp begins with electrical energy when plugged in and turns into _________ energy when the light comes on.

• Mechanical (PE + KE)

• Kinetic

• Radiant (Light)

• Sound

Multiple Choice

Which statement best describes Electrical Energy?

• Energy stored in an object due to its height above the earth.

• Energy that is possessed by an object due to motion or position. This involves kinetic and potential energy.

• Energy that is released during a reaction often in the form of heat.

• Energy resulting from a flow of energy charge through a wire or other medium.

Energy is equal to Voltage times the charge ​

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Electrical Energy Relationship

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​V= E/Q

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The voltage is equal to the Energy divided by the charge ​

Working with Charges

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Multiple Choice

If the Voltage of the Battery is 9V and the charge is 15C what is the work done (energy)?

• 135

• 0.60

• 1.67

• 1