Understanding Electrical Safety and Appliance Design
Interactive Video
•
Physics
•
9th - 10th Grade
•
Practice Problem
•
Hard
Jennifer Brown
FREE Resource
5 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the primary function of the live wire in an electrical appliance?
To connect the appliance to the ground
To prevent electric shocks
To supply electric current to the appliance
To provide a path for fault currents
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Why is it important to have a third pin in some electrical plugs?
To offer a safer path for fault currents
To provide additional power to the appliance
To increase the voltage supply
To reduce the appliance's energy consumption
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is a fault current?
A current that flows through the live wire only
A current that flows through the earth wire only
A current that flows through the neutral wire only
A current that flows through the casing of an appliance
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Why do some appliances, like tablets, not require a third pin?
They operate at a lower voltage
They have insulated casings that prevent fault currents
They are designed to use less power
They are not connected to the main power supply
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is unique about the design of the third pin in a plug?
It is made of a different material
It is detachable from the plug
It is longer and thicker than the other pins
It is shorter and thinner than the other pins
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