10 Questions
What is the most common voltage and frequency combination used in North America?
120 V and 60 Hz
What is the general-purpose alternating-current electric power supply commonly known as?
Mains electricity
What may happen to travellers' portable appliances when used with foreign electrical supplies?
Inoperative or damaged
What is the purpose of non-interchangeable plugs and sockets in different regions?
Provide protection from accidental use of appliances with incompatible voltage and frequency
What is the nominal voltage and frequency used in much of the world for electrical power?
230 volts and 50 Hz
What is the form of electrical power that is delivered to homes and businesses through the electrical grid in many parts of the world?
Mains electricity
What is the nominal voltage and frequency commonly used in much of the world for electrical power?
230 volts and 50 Hz
What is the most common voltage and frequency combination used in North America for electrical power?
120 volts and 60 Hz
What may happen to travellers' portable appliances when used with foreign electrical supplies?
They may be inoperative or damaged
What is the purpose of non-interchangeable plugs and sockets in different regions for electrical power?
Provide protection from accidental use of appliances with incompatible voltage and frequency
Test your knowledge of mains electricity with this quiz! Explore topics such as utility power, power grid, domestic power, and wall power. Learn about the general-purpose alternating-current (AC) electric power supply that is delivered to homes and businesses through the electrical grid in many parts of the world.
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