A rheostat is not a type of variable resistor.

More Questions from Resistance and Power

• If 500 mA is flowing through a 10 Ω resistor, the wattage rating of the resistor should be 2 watts.
• The cross-sectional area of a conductor is one factor that determines the conductor's resistance to current.
• In a resistive circuit, if the voltage increases, the current will increase.
• Resistance limits the flow of current.

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