Which unit is used to measure current?

Which unit is used to measure current?

• A. Volt
• B. Ampere
• C. Ohm
• D. Farad

Answer: (B)

Current is the rate at which electric charge flows past a point, and it’s measured in amperes. An ampere, symbol A, defines one coulomb of charge passing a point each second. This is different from voltage, which is the push or pressure that moves charges and is measured in volts, and from resistance, which is how much a material resists current and is measured in ohms; capacitance is measured in farads. Ohm’s law ties them together: I = V/R, showing how current depends on the voltage and the circuit’s resistance. So the unit used to measure current is the ampere.

Current is the rate at which electric charge flows past a point, and it’s measured in amperes. An ampere, symbol A, defines one coulomb of charge passing a point each second. This is different from voltage, which is the push or pressure that moves charges and is measured in volts, and from resistance, which is how much a material resists current and is measured in ohms; capacitance is measured in farads. Ohm’s law ties them together: I = V/R, showing how current depends on the voltage and the circuit’s resistance. So the unit used to measure current is the ampere.