R represents what quantity?

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Study for the Con Edison Basic Electric Test. Prepare with flashcards and multiple choice questions, each question has hints and explanations. Get ready for your exam!

Multiple Choice

R represents what quantity?

Explanation:
The main idea here is the symbol used for a specific electrical property in circuit analysis. R is used to denote resistance—the property that oppos es the flow of electric current. In Ohm’s law, voltage equals current times resistance (V = IR). This means, for a given voltage, increasing the resistance reduces the current, and the units are ohms (Ω). That convention is why R is associated with resistance. Inductance is represented by L, capacitance by C, and power by P, with their own defining relationships (for example, power can be written as P = VI or P = I^2R). So the quantity represented by R is resistance.

The main idea here is the symbol used for a specific electrical property in circuit analysis. R is used to denote resistance—the property that oppos es the flow of electric current. In Ohm’s law, voltage equals current times resistance (V = IR). This means, for a given voltage, increasing the resistance reduces the current, and the units are ohms (Ω). That convention is why R is associated with resistance.

Inductance is represented by L, capacitance by C, and power by P, with their own defining relationships (for example, power can be written as P = VI or P = I^2R). So the quantity represented by R is resistance.

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