Capacitors Dielectrics and Current

When capacitors in parallel (3 capacitors), the equivalent capacitance is

• C = C₁ + C₂ + C₃

• C = 1/C₁ + 1/C₂ + 1/C₃

• C = QV₁ + QV₂ + QV₃

• C = QV₁ + QV₂ + QV₃

When capacitors is arrange in series (3 capacitors), the equivalent capacitance C is

• C = C₁ + C₂ + C₃

• 1/C = 1/C₁ + 1/C₂ + 1/C₃

• C = QV₁ + QV₂ + QV₃

• C = CR₁ + CR₂ + CR₃

How is the capacitance of a parallel-plate capacitor affected by the area of each plate?

• C is directly proportional to the area A of each plate

• C is inversely proportional to the area A of each plate

• C is partially proportional to the area A of each plate

• C is fully proportional to the area A of each plate

How is the capacitance of a parallel-plate capacitor affected by the distance between the plates ?

• C is directly proportional to the area A of each plate

• C is inversely proportional to the distance d between the plates

• C is partially proportional to the area A of each plate

• C is not affected by the area A of each plate

How is the capacitance of a parallel-plate capacitor affected by filling the space between the plates with an insulator ?

• C stable when the space between the plates is filled with an insulator, ε_r >1

• C reduces when the space between the plates is filled with an insulator, ε_r >1

• C increases when the space between the plates is filled with an insulator, ε_r >1

• C fluctuate when the space between the plates is filled with an insulator, ε_r >1

If the current at a given point in a circuit is 2.5 Amp, then how many electrons pass that point on the circuit in a time period of 1 minute.

Answer:

• 9.375 x 10²⁰ electrons

• 9.375 x 10²¹ electrons

• 9.375 x 10¹⁹ electrons

• 9.375 x 10¹⁸ electrons

In the equation I = nAvq, what does v represent?

• The speed of the electrons

• The average speed of the electrons

• The velocity of the electrons

• The average velocity of the electrons

• the fastest speed of all electrons

What is electrolysis?

• breaking down of a compound using a current
• making a compound using a current

What kind of Electrical Current does Electroysis require?

• Direct
• Indirect
• Anternative
• A alternating

Explain why the electrolyte has to be a liquid.

• So the ions can move
• So the electrons can move
• So that it doesn't get too hot
• So the fish are ok