Capacitor and capacitance

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

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

Tags

NGSS.HS-PS2-4

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

The figure to the right represents:

• Capacitor
• Diode
• Inductor
• Resistor

With respect to the capacitor, which relationship is true? •

• C = Q×V

• V = C×Q

• V = Q/C

• Q = C/V

With respect to the capacitor, which relationship is true?

• C = Q/V
• V = C×Q
• Q = C/V
• Q = V/C

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 potential difference between the plates?

• 2.00x10⁴V

• 1.75x10^{4 P.D.}

• 1.00x10^-4P

• 1.00x10⁴V

• not solvable! because capacitor has no potential difference because it should have an insulator in between.

Tags

NGSS.HS-PS3-2

NGSS.HS-PS3-5

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

• True

• False

Charge stored per unit voltage

• Energy

• Capacitance

• Resistance

• Voltage