7.2 Applications of Electric Field

7.2 Applications of Electric Field

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Learning check-point 1

Electrical Potential 😊

Multiple Choice

Potential difference is the difference in the amount of energy that _____ have between two points in a circuit

• micro carriers

• point carriers

• charge carriers

Multiple Choice

Does potential difference also mean Voltage?

• Yeees

• Noooo

Multiple Choice

If you move unlike charges away from each other, then the electric potential difference is _______

• positive

• negative

• neutral

Multiple Choice

If you move unlike charges closer to each other, then the electric potential difference is _______

• positive

• negative

• neutral

Bonus Point Round

Lets see who gets a bonus point!

Multiple Choice

Which takes more energy to bring them closer to each other:

• Two like charges

• Two Unlike charges

Learning check-point 2

Millikan, Electron Beam, and Electric Potential Equation 😄

Multiple Choice

What did the Millikan measure with his experiment?

• The density of oil, definitely! 😄

• The elementary charge, of course! 😋

• The dragon charge! 🔥

Multiple Choice

A voltmeter reads 400 V across two charged, parallel plates that are 0.020 m apart. What is the magnitude of the electric field between them?

• 20,000 N/C

• 50,000 N/C

• 80,000 N/C

Multiple Choice

The beam is produced by an ______ gun, a device that accelerates and focuses the electrons given off by a hot wire.

• electron

• proton

Learning check point 3

Capacitors 😉

Bonus Point Round

Lets see who gets a bonus point!

Multiple Choice

What is the relationship between Charge and Potential Difference?

• The are inversely proportional

• The are directly proportional

Learning check point 3

Capacitors 😉 - Problem Solving

Multiple Choice

A capacitor has a capacitance of 0.078 μF. If the charge of the capacitor is 37 μC, what is the electric potential difference?

• 10 x 10² V

• 2.89 x 10^-12 V

• 2.89 x 10¹² V

• 4.74 x 10² V

Multiple Choice

A sphere was connected to the + terminal of a 40 V battery while the − terminal was connected to Earth. After a period, the sphere was charged to 2.4×10^-6 C.

What is the capacitance of the sphere-Earth system?

• 6.0 x 10^-8 F

• 20.0 x 10^-8 F

• 3.0 x 10^-8 F

Learning chek point 3

Capacitors 😎 - Bye bye 7.2

Multiple Choice

Capacitor is a device used to__________

• store electrical energy

• vary the resistance

• store magnetic energy

Multiple Choice

Capacitor stores which type of energy?

• kinetic energy

• vibrational energy

• potential energy

• heat energy

Multiple Choice

What is the value of capacitance of a capacitor which has a voltage of 4V and has 16C of charge?

• 2 F

• 4 F

• 6 F

• 8 F

Open Ended

Any questions?

Bye Bye Bye Chapter 7

Hellooooo Chapter 8