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Questions and Answers
What is the usual voltage received at a house?
What is the voltage used by small appliances in outlets?
What voltage do electric stoves, clothes dryers, water heaters, and AC units usually use?
What can we measure in a circuit using Ohm's Law?
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What is the definition of current?
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What letter is normally used to represent current?
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What is the definition of voltage?
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What letter is normally used to represent voltage?
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Study Notes
Electric Circuits
- The usual voltage received at a house is 240 volts, which is then stepped down to 120 volts for normal household use.
Voltage Usage
- Small appliances in outlets use 120 volts.
- Electric stoves, clothes dryers, water heaters, and AC units usually use 240 volts.
Ohm's Law
- Using Ohm's Law, we can measure resistance in a circuit, knowing the voltage and current.
- The formula for Ohm's Law is I = V/R, where I is current, V is voltage, and R is resistance.
Electric Current
- Electric current is defined as the flow of electrons from a point of higher potential to a point of lower potential.
- The letter "I" is normally used to represent current.
Electric Voltage
- Electric voltage is defined as the potential difference between two points in a circuit.
- The letter "V" is normally used to represent voltage.
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Description
Test your knowledge of electrical voltage with this quiz! Learn about the typical voltage in household outlets and appliances, and see if you know the standard voltages for different devices.
