Electronics

What electronic component allows current to flow in one direction only?

• Resistor

• LED

• Diode

• Switch

What type of circuit is the most efficient?

• Combination circuit
• Series circuit
• Parallel circuit
• Isometric circuit

Identify the electronic symbol.

• Diode

• Photodiode

• Reflective diode

• Light Emitting Diode

Which of the following is the correct transistor circuit symbol?

• 
• 
• 
• 

Doping is a process of adding a certain amount of specific impurities to semiconductor. What is the purpose of doping?

• To increase the resistance of semiconductor

• To increase the thermal energy of semiconductor

• To increase the temperature of the semiconductor

• To increase the conductivity of the semiconductor

What is the function of a diode?

• Acts as a current amplifier

• Acts as an automatic switch

• Stores electric charge

• Allows the current to pass in one direction only

The formula for current as per Ohm’s Law is

• Voltage / Resistance

• Resistance * Voltage

• Voltage + Resistance

• Resistance / Voltage

The most commonly used semiconductor element is

• Silicon

• Germanium

• Carbon

• copper

How many electrons are in a full valence band?

• 6
• 8
• 4
• 2

What are the 3 legs of a transistor called?

• Base, Electrode, Commiter

• Bridge, Collector, Extruder

• Base, Collector, Emitter

• Brake, Collection, Emit