Capacitance and Capacitors

The capacitance of a parallel-plate capacitor can be increased by: 

• increasing the charge 
• decreasing the charge 
• increasing the plate separation
• decreasing the plate separation 

What is the voltage across   the plates of the capacitor if  the capacitance is 10 uF and the Charge stored is  30 uC?

• 0.333 V
• 3 V
• 300 V

Is it correct to say that the capacitance is inversely proportional to the area of the parallel plates?

• True

• False

Each of the four capacitors shown is 500 mF.  The voltmeter reads 1000V.  The magnitude of the charge on each capacitor plate is:

• 0.2 C
• 0.5 C
• 20 C
• 50 C

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

from question 16:

The plates of a parallel-plate capacitor are 2.50mm apart, and each carries a charge of magnitude 80.0nC. The plates are in vacuum. The electric field between the plates has a magnitude of 4.00x10⁶V/m.

What is the area of each plates?

• 2.26x10^-3cm²

• 2.26x10^-3m²

• 22.6m²

• 2.26cm²

• none of the above

------------------------ is created out of two metal plates and an insulating material called a dielectric.

• An inductor
• A capacitor
• A fixed resistor
• A variable resistor

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

1. A ____________ connection has 2 or more components connected so that there is more than one path for current to flow.

• series

• parallel

• series/parrallel

• polarized

In the capacitor, the dielectric can be made out of all sorts of ---------- materials and the plates are made of a -------------- material.

• conductive, insulating 
• conductive, conductive
• insulating, conductive
• insulating, insulating