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Understanding Resistors and Their Functions

Authored by Maya S

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Understanding Resistors and Their Functions
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10 questions

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1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is Ohm's Law and how is it expressed mathematically?

I = V + R

Ohm's Law is expressed as V = I * R.

V = R / I

R = V - I

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

If a resistor has a resistance of 5 ohms and a current of 2 amps, what is the voltage across it?

20 volts

5 volts

15 volts

10 volts

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What do the colors on a resistor represent in the resistor color code?

The colors indicate the resistor's resistance value and tolerance.

The colors show the maximum voltage the resistor can handle.

The colors represent the manufacturing date of the resistor.

The colors indicate the resistor's power rating.

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

How many bands are typically found on a standard 4-band resistor?

2

8

6

4

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the value of a resistor with the color bands red, red, and brown?

470 ohms

330 ohms

100 ohms

220 ohms

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What are the main differences between fixed and variable resistors?

Fixed resistors have a constant resistance; variable resistors can be adjusted.

Fixed resistors are more expensive than variable resistors.

Variable resistors are used only in high-power applications; fixed resistors are not.

Fixed resistors can be adjusted; variable resistors have a constant resistance.

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What type of resistor is used to limit current in LED circuits?

Variable resistor

Fixed resistor

Inductor

Capacitor

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