# Electronics Ultimate MCQ: Trivia Quiz!

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Thor05
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Quizzes Created: 1 | Total Attempts: 411
Questions: 11 | Attempts: 411  Settings  How much do you know about electronics? Would you be able to score 100% in the quiz? According to this quiz, you should know the formula for P, what a diode is, what type of battery are capacitors, the color of a resistor for, what is a transistor, and the three things you must do for a circuit. This valuable quiz gives you information about electronics. Good luck to you.

• 1.

### What Binary number is 01110?

• A.

10

• B.

111

• C.

7

• D.

14

D. 14
Explanation
The binary number 01110 is equivalent to the decimal number 14. In binary, each digit represents a power of 2, starting from the rightmost digit as 2^0. Therefore, the value of the binary number 01110 can be calculated as (0 * 2^4) + (1 * 2^3) + (1 * 2^2) + (1 * 2^1) + (0 * 2^0) = 14.

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• 2.

### If an AND 2 input gates had an input of  1   0,   then the output would be?

• A.

0

• B.

10

• C.

1

A. 0
Explanation
If an AND gate has two inputs, it will only output a 1 if both inputs are 1. In this case, one of the inputs is 0, so the output will be 0.

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• 3.

### The formula of P = ?

• A.

P/R

• B.

E/R

• C.

I x E

• D.

SQUARE ROOT OF E/R

C. I x E
Explanation
The formula for P is obtained by multiplying the variables I and E.

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• 4.

### What is the voltage of a Diode?

• A.

7

• B.

1

• C.

2

• D.

.7

D. .7
Explanation
The voltage of a diode is typically around .7 volts. This is because a diode is a semiconductor device that allows current to flow in only one direction. When forward biased, the diode has a voltage drop of approximately .7 volts across it. This voltage drop is necessary to overcome the barrier potential and allow current to flow through the diode.

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• 5.

### Capacitors are a type of battery?

• A.

Yes it can be used as a Battery

• B.

No it only holds a small charge

• C.

It is nothing like a Battery

B. No it only holds a small charge
Explanation
Capacitors are not a type of battery. While both capacitors and batteries store electrical energy, they do so in different ways. Batteries use chemical reactions to generate and store electrical energy, while capacitors store energy in an electric field between two conductive plates. Capacitors can only hold a small charge compared to batteries, and they discharge their energy rapidly when connected to a circuit. Therefore, capacitors are not suitable for long-term energy storage like batteries.

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• 6.

### What is the color on a Resistor is for?

• A.

To make the circuitboard look pretty.

• B.

To make the circuits cooler.

• C.

To know what size the Resistor is.

C. To know what size the Resistor is.
Explanation
The color on a resistor is used to indicate its resistance value and tolerance. Each color represents a specific number, and by reading the color code, one can determine the resistance value of the resistor. This is important in circuit design and troubleshooting, as it allows engineers and technicians to select the appropriate resistor for a specific application and ensure the circuit functions correctly.

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• 7.

### What are the three legs on a Transistor?

• A.

Base, Diode, Collector

• B.

Pin, Base, Collector

• C.

Voltage in, Voltage out, Ground

• D.

Base , Emitter, Colletor

D. Base , Emitter, Colletor
Explanation
The correct answer is Base, Emitter, Collector. In a transistor, the base is responsible for controlling the flow of current between the emitter and the collector. The emitter is the source of electrons, while the collector collects the electrons and allows the current to flow through it.

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• 8.

### An OR gate with two inputs  1   1  What is the Output?

• A.

0

• B.

10

• C.

00

• D.

1

D. 1
Explanation
An OR gate with two inputs will output 1 if at least one of the inputs is 1. In this case, both inputs are 1, so the output will be 1.

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• 9.

### Diodes are used for what?

• A.

Reversing the voltage.

• B.

Slowing down the amp.

• C.

Let the voltage only go one way.

C. Let the voltage only go one way.
Explanation
Diodes are electronic components that allow the flow of current in only one direction. They act as a one-way valve for electrical current, allowing it to pass through in one direction while blocking it in the opposite direction. This property makes diodes useful in a variety of applications, such as rectification in power supplies, signal modulation, and protection against reverse current flow.

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• 10.

### In what way can you demagnetize a magnet?

• A.

Soaking it in water for hours

• B.

Heating it

• C.

Hanging it outside for three days

• D.

Beating it against a hard object

• E.

None of the above

B. Heating it
D. Beating it against a hard object
Explanation
Heating a magnet can demagnetize it by disrupting the alignment of its magnetic domains. When a magnet is heated to a certain temperature called the Curie temperature, its magnetic properties are lost. Beating a magnet against a hard object can also cause the magnetic domains to become misaligned, resulting in demagnetization. Soaking a magnet in water or hanging it outside for three days will not demagnetize it. Therefore, the correct answer is heating it and beating it against a hard object.

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• 11.

### Three things do you need for a circuit:

• A.

Reading skills, Math skills, Computer skills

• B.

• C.

Power supply, Switching Device, Load type

• D.

None of the above Back to top