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Questions and Answers
What is the unit of measurement for current?
What is the unit of measurement for current?
- Ohm (Ω
- Milli-amp (mA
- Volt (V
- Amp (A (correct)
Which of the following is not a property of electricity?
Which of the following is not a property of electricity?
- Current
- Temperature (correct)
- Voltage
- Resistance
What type of electricity is commonly used in homes and offices?
What type of electricity is commonly used in homes and offices?
- Lightning electricity
- Static electricity
- Alternating current (correct)
- Direct current
What type of power does computer components use?
What type of power does computer components use?
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What is the difference between direct current (DC) and alternating current (AC)?
What is the difference between direct current (DC) and alternating current (AC)?
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What is the unit of measurement for resistance?
What is the unit of measurement for resistance?
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What is the driving force behind the flow of current?
What is the driving force behind the flow of current?
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How is voltage related to current?
How is voltage related to current?
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Study Notes
- Electricity is the flow of electric current or electrons.
- It can be transformed into other forms of energy like heat, light, and mechanical energy.
- The flow of electricity through an object is known as current, measured in amps.
- Voltage is the driving force behind the flow of current, measured in volts.
- Resistance is the property of a material that limits current flow, measured in ohms.
- Direct current flows in one direction and is produced by batteries, static, and lightning.
- Alternating current periodically reverses direction and is produced by AC generators from power plants.
- AC current is used in homes and offices and can be reduced by power transformers.
- Computer components use direct current power produced by power supplies converted from alternating current.
- Voltage may also be referred to as potential difference or electromotive force.
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