Current Electricity

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How does alternating current differ from direct current?

Direct current always flows in the same direction; the direction of an alternating current switches back and forth

What can you infer about this source of electricity?

It is a source of alternating current

What is a source of mechanical energy?

Wind and fossil fuels

What is the main function of a turbine?

spinning

How does electricity travel from power plants to your house?

through transition wires

Place the following events in sequence: A) Voltage is increased by a transformer; B) Voltage is decreased by a transformer; C) Electrical current enters your home

A, B, C

How does a generator create current?

By using an electromagnet

What is the function of every generator on Earth?

Changing mechanical energy into electrical energy

What is one possible reason why it's a good idea to conserve electricity?

It is often produced by burning fossil fuels, which are a polluting, non-renewable resource.

What do fuel cells, batteries, and solar cells have in common?

They are sources of direct current


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