Topic 9. Electric Potential Energy. Matter and Energy II

What's the formula to get Potential Energy (Ep)

Why is the electric force considered as a conservative force?

• Because you can save into a jar

• Because work just depends on the initial and final position

• Because the answer is on your ❤

• In the system just exists energy

When the value of the work is negative, the electric potential energy is:

• equal

• increasing

• decreasing

• null

How the electric potential energy is calculated?

The nano prefix (η) means you have to multiply the base 10 with a power of:

• - 6

• 6

• 9

• - 9

To have an Electric Potential Energy situation is necessary to have the next conditions:

• A particle within an E receiving an electrostatic force

• Two charges working at a given distance

• A charge affected by an E

• Forgotten prefixes to develop exercises and getting ZERO

Find the potential energy of a system of a charge of +7 μC found at 0.06m of another charge of 20 μC?

• 350 J

• 21 J

Find the distance at which you need to place a charge -16 μC from a charge 10ηC such that the potential energy between them is equal to 900 kJ

• 1.6 μm

• 1600000 m

Talking about electric potential energy, what's the most impossible superheroe?

• 
• 
• 

• r

• E

• q