Electronics for Beginners: Resistors

Electronics for Beginners: Resistors

Assessment

Interactive Video

Physics, Science

7th - 10th Grade

Practice Problem

Hard

Created by

Ethan Morris

FREE Resource

The video tutorial introduces the concept of resistors in electrical circuits, explaining how they limit the flow of electrons and affect current. It covers conductors with zero resistance, series and parallel resistor configurations, and their impact on total resistance and current flow. The tutorial also demonstrates the application of Ohm's Law in analyzing circuits, providing equations for calculating total resistance in series and parallel setups.

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10 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the primary function of a resistor in an electric circuit?

To increase the voltage

To decrease the voltage

To limit the flow of electrons

To store electrical energy

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What happens to the current when a conductor has zero resistance?

The current is very high

The current remains the same

The current decreases

The current stops flowing

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

How does adding a resistor to a conductor affect the current?

The current decreases

The current increases

The current remains the same

The current stops flowing

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the total resistance of two resistors in series with resistances r1 and r2?

r1 / r2

r1 + r2

r1 * r2

r1 - r2

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

If three resistors are connected in series, how is the total resistance calculated?

The average of the individual resistances

The sum of the individual resistances

The difference of the individual resistances

The product of the individual resistances

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What happens to the total resistance when two resistors of the same resistance are connected in parallel?

The total resistance becomes zero

The total resistance halves

The total resistance doubles

The total resistance remains the same

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

In a parallel circuit, how is the total current calculated?

The average of the individual currents

The sum of the individual currents

The product of the individual currents

The difference of the individual currents

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