Questions & Answers
Browse all 18 questions from the
Nature and Electrical Engineering Basics study set below.
Each question shows the correct answer — select a study format above to practice interactively.
1
Which marine animal is famous for producing a high-voltage electrical discharge to stun its prey?
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A
Electric Eel
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B
Sea Turtle
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C
Great White Shark
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D
Blue Whale
2
What is the primary function of an electrical insulator in a circuit?
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A
To conduct heat
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B
To stop the flow of electric current
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C
To increase voltage
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D
To generate electricity
3
In electrical engineering, what is the standard unit used to measure electric current?
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A
Volt
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B
Watt
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C
Ampere
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D
Ohm
4
Which natural phenomenon is a massive electrical discharge in the atmosphere?
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A
Rainbow
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B
Lightning
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C
Aurora
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D
Tornado
5
What material is commonly used as a conductor in electrical wiring due to its high conductivity?
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A
Rubber
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B
Glass
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C
Copper
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D
Wood
6
What device is used in a circuit to provide electrical resistance?
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A
Resistor
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B
Battery
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C
Switch
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D
Insulator
7
Which biological process in the human body relies on electrical impulses to send signals to the brain?
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A
Digestion
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B
Respiration
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C
Nervous system activity
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D
Circulation
8
What is the main purpose of a battery in an electrical circuit?
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A
To produce heat
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B
To provide a source of chemical energy to create voltage
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C
To measure magnetic fields
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D
To act as a circuit breaker
9
Which of these is a non-conductive material often used to coat electrical wires for safety?
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A
Plastic
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B
Aluminum
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C
Gold
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D
Iron
10
In a simple electrical circuit, what does a switch do?
-
A
Increases the voltage
-
B
Changes the current direction
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C
Opens or closes the path for current flow
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D
Measures the resistance
11
What instrument is used to detect the presence of electrical current?
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A
Galvanometer
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B
Thermometer
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C
Barometer
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D
Hygrometer
12
Which of these describes a closed circuit?
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A
A broken wire
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B
A path that allows current to flow
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C
A disconnected battery
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D
An air gap in the wire
13
What force causes the attraction and repulsion between electrically charged objects?
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A
Magnetic force
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B
Gravitational force
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C
Electromagnetic force
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D
Frictional force
14
What does a solar cell convert into electricity?
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A
Wind energy
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B
Geothermal energy
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C
Sunlight
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D
Kinetic energy
15
Which bird's ability to migrate is believed to be aided by sensing the Earth's magnetic field, a concept related to electromagnetism?
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A
Penguin
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B
Pigeon
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C
Ostrich
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D
Flamingo
16
What component is used in electrical circuits to protect them from excessive current?
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A
Fuse
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B
Capacitor
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C
Transistor
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D
Transformer
17
What is the natural state of an atom regarding its electrical charge when it has an equal number of protons and electrons?
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A
Positively charged
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B
Negatively charged
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C
Electrically neutral
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D
Superconductive
18
Which property of a wire determines how much it resists the flow of electricity?
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A
Temperature only
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B
Length, material, and thickness
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C
Color of the insulation
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D
Weight of the wire
