The symbol R represents which electrical quantity?

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Multiple Choice

The symbol R represents which electrical quantity?

R is used for resistance. Resistance is what opposes the flow of current, and Ohm’s law links the three basic quantities with V = IR. The unit of resistance is the ohm (Ω). Voltage is represented by V, current by I, and power by P, so the symbol R specifically denotes resistance. For a resistor with resistance R ohms, the current flowing when a voltage V is applied is I = V/R. In diagrams, labeling a component with R indicates a resistor with a given resistance value.

R is used for resistance. Resistance is what opposes the flow of current, and Ohm’s law links the three basic quantities with V = IR. The unit of resistance is the ohm (Ω). Voltage is represented by V, current by I, and power by P, so the symbol R specifically denotes resistance. For a resistor with resistance R ohms, the current flowing when a voltage V is applied is I = V/R. In diagrams, labeling a component with R indicates a resistor with a given resistance value.

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