Understanding Circuits

Understanding Circuits

Assessment

Interactive Video

Created by

Olivia Brooks

Physics, Chemistry, Science

5th - 8th Grade

Hard

The video tutorial introduces the concept of electrical circuits, explaining how electricity flows through circuits to power devices like light bulbs. It covers the role of free electrons in conducting electricity, the measurement of current using an ammeter, and voltage using a voltmeter. The tutorial distinguishes between series and parallel circuits, illustrating how current and voltage behave differently in each type. It concludes with examples of voltage distribution in circuits, emphasizing the differences in energy transfer in series versus parallel configurations.

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10 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What are free electrons responsible for in a circuit?

Generating heat

Binding with protons

Creating new atoms

Carrying energy around the circuit

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which device is used to measure the current in a circuit?

Voltmeter

Ammeter

Barometer

Thermometer

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the role of a voltmeter in a circuit?

To measure the speed of electrons

To measure the energy difference across components

To increase the voltage

To count the number of electrons

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

In a series circuit, how does the current flow?

Through each component one after another

In a random pattern

Through all components simultaneously

Only through the first component

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What happens to the current in a parallel circuit?

It remains constant throughout

It only flows through one path

It stops flowing

It splits to flow through different paths

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

In a series circuit with two bulbs, how is the energy distributed?

Energy is not transferred

All energy goes to the second bulb

Energy is equally divided between the bulbs

All energy goes to the first bulb

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What happens to the current after it splits in a parallel circuit?

It disappears

It remains split

It reverses direction

It combines again

8.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

How does the voltage across each bulb in a parallel circuit compare to the voltage across the battery?

It is lower than the battery voltage

It is zero

It is higher than the battery voltage

It is the same as the battery voltage

9.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the effect of adding more bulbs in series on the brightness of each bulb?

Brightness remains the same

Bulbs do not light up

Brightness decreases

Brightness increases

10.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

In a parallel circuit, how does the brightness of bulbs compare to those in a series circuit?

Same brightness

Dimmer in parallel

No light in parallel

Brighter in parallel

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