Capacitors

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

With respect to the capacitor, which relationship is true?

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

If C= 470μF, V=3V, then

• 1.71mC
• 1.51mC
• 1.61mC
• 1.41mC

The formula for the energy stored in the capacitor is:

• W=(1/2)CV
• W=(1/2)C²V
• W=(1/2)CV²
• W=(1/2)²CV

Tags

NGSS.HS-PS3-2

In the capacitor, greater plate area gives: 

• greater capacitance
• less capacitance
• no change

In the capacitor, closer plate spacing gives: 

• less capacitance
• no change
• greater capacitance

Capacitor C₁ and C₂ are connected in parallel. The equivalent capacitance is given by: 

• C₁ + C₂
• 1/(C₁ + C₂) 
• C₁C₂/(C₁ + C₂) 
• (C₁ + C₂)/C₁C₂