R represents what quantity?

R represents what quantity?

• A. Inductance
• B. Resistance
• C. Capacitance
• D. Power

Answer: (B)

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.