Semi Conductors

1. Which of the following statements DOES NOT describe a capacitor an electrical device?

• A. It stores charge and electrical potential energy.

• B. It is manufactured in many sizes and shapes.

• C. It is used to smooth out unwanted fluctuations due to power surges in electronic circuits.

• D. It allows current to pass through in any condition.

What is the unit of capacitance?

• Ohm

• Volt

• Watt

• Farad

Match the following functions with their descriptions:

• Function of a resistor

• To limit the current past through a circuit

• Function of a capacitor

• To store electrical energy

• Function of a transistor

• To act like switch

• Function of a diode

• To rectify the direction of current

Capacitor is a device used to__________

• store electrical energy

• vary the resistance

• store magnetic energy

• dissipate energy

What is the primary material used in ceramic capacitors?

• Ceramic

• Plastic

• Glass

• Paper

Which of the following is symbol of capacitor ?

• 
• 
• 
• 

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

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

The picture and symbol of capacitor to the right represents:

• non-polarized capacitor

• polarized capacitor

• variable

• preset

The picture and symbol of capacitor to the right represents:

• non-polarized

• polarized

• variable

• preset

what is a diodes function

• allows current to flow in one direction

• allows current to flow in two directions

• is a resistor