Quiz on Electronics

Multiple Choice Questions

1. What is the study of electricity, electronics, and electromagnetism?

   • A. Physics
   • B. Electrical Engineering
   • C. Chemistry
   • D. Biology

2. What is the symbol for a diode?

   • A. [ ]
   • B. ( )
   • C. < >
   • D. \/

3. What is the unit of electrical resistance?

   • A. Volts
   • B. Amperes
   • C. Ohms
   • D. Watts

4. What is the name of the law that states that the current through a conductor between two points is directly proportional to the voltage across the two points?

   • A. Ohm's Law
   • B. Kirchhoff's Law
   • C. Faraday's Law
   • D. Joule's Law

True/False Questions

1. An amplifier increases the voltage of a signal.

   • True
   • False

2. A capacitor stores energy in the form of an electric field.

   • True
   • False

3. A transistor is a three-terminal device used to amplify or switch electronic signals.

   • True
   • False

Fill in the Blank Questions

1. A ________ is a device that is used to measure electrical current.

2. The ________ is a unit of electrical power equal to one joule per second.

3. The ________ is a law that states that the sum of currents entering and leaving a node is equal to zero.

Short Answer Questions

1. What is a resistor?

2. What is the purpose of an oscilloscope?

Answer Key

1. B
2. D
3. C
4. A
5. True
6. True
7. True
8. Ammeter
9. Watt
10. Kirchhoff's Law
11. A resistor is a passive electrical component that reduces or limits the flow of electric current.
12. An oscilloscope is a device used to measure and display electrical signals in the form of a graph or waveform.

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Practice Sheet on Electronics

Q1. What is the definition of Electronics?

A1. Electronics is the branch of engineering that deals with the study and application of electrical circuits and devices.

Q2. What are the components of an electronic circuit?

A2. The components of an electronic circuit include resistors, capacitors, transistors, diodes, and integrated circuits.

Q3. What is the purpose of a resistor in an electronic circuit?

A3. The purpose of a resistor in an electronic circuit is to reduce the current flow, control the voltage level, and divide the voltage.

Q4. What is the difference between a capacitor and a battery?

A4. The difference between a capacitor and a battery is that a capacitor stores energy temporarily while a battery stores energy over a longer period of time.

Q5. What is the purpose of a transistor in an electronic circuit?

A5. The purpose of a transistor in an electronic circuit is to amplify a signal or control the flow of current.

Q6. What is the difference between a diode and a transistor?

A6. The difference between a diode and a transistor is that a diode allows current to flow in one direction only, while a transistor can control the flow of current in either direction.

Q7. What is an integrated circuit?

A7. An integrated circuit is a circuit made up of many components on a single chip.

Q8. True or False: Electronics is the same as Electrical engineering?

A8. False. Electronics is a branch of Electrical engineering.

Q9. True or False: A capacitor stores energy over a longer period of time than a battery.

A9. False. A battery stores energy over a longer period of time than a capacitor.

Q10. True or False: A diode can control the flow of current in either direction.

A10. False. A diode allows current to flow in one direction only.

Answer Key: Q1. Electronics is the branch of engineering that deals with the study and application of electrical circuits and devices. Q2. Resistors, capacitors, transistors, diodes, and integrated circuits. Q3. To reduce the current flow, control the voltage level, and divide the voltage. Q4. A capacitor stores energy temporarily while a battery stores energy over a longer period of time. Q5. To amplify a signal or control the flow of current. Q6. A diode allows current to flow in one direction only, while a transistor can control the flow of current in either direction. Q7. An integrated circuit is a circuit made up of many components on a single chip. Q8. False. Electronics is a branch of Electrical engineering. Q9. False. A battery stores energy over a longer period of time than a capacitor. Q10. False. A diode allows current to flow in one direction only.