I stands for what quantity?

I stands for what quantity?

• A. Intensity of current
• B. Voltage
• C. Resistance
• D. Capacitance

Answer: (A)

I stands for electric current—the rate at which electric charges flow through a conductor. It’s often described as the intensity of current, but the essential idea is the amount of charge passing a point per unit time. The unit is the ampere (A), which equals one coulomb per second. In circuit notation, current is represented by I, voltage by V, resistance by R, and capacitance by C. Ohm’s law shows how these relate: I = V / R. For example, if you have 120 V across a 30 Ω resistor, the current is I = 120/30 = 4 A. So the quantity I measures is the current flow.

I stands for electric current—the rate at which electric charges flow through a conductor. It’s often described as the intensity of current, but the essential idea is the amount of charge passing a point per unit time. The unit is the ampere (A), which equals one coulomb per second. In circuit notation, current is represented by I, voltage by V, resistance by R, and capacitance by C. Ohm’s law shows how these relate: I = V / R. For example, if you have 120 V across a 30 Ω resistor, the current is I = 120/30 = 4 A. So the quantity I measures is the current flow.