If E = 24 V and R = 6 Ω, what is the current I?

If E = 24 V and R = 6 Ω, what is the current I?

• A. 4 A
• B. 2 A
• C. 3 A
• D. 6 A

Answer: (A)

Current through a component is found using Ohm's law: I = V / R. With 24 volts across a 6-ohm resistor, the current is 24 / 6 = 4 amperes. This shows how voltage pushes current and how resistance limits it: increasing the voltage raises current, while increasing resistance lowers it for the same voltage. If you’re thinking of the other numbers, they would require different voltages across the same 6 Ω resistor: 12 V would give 2 A, 18 V would give 3 A, and 36 V would give 6 A. So 4 A is the correct current for the given values.

Current through a component is found using Ohm's law: I = V / R. With 24 volts across a 6-ohm resistor, the current is 24 / 6 = 4 amperes. This shows how voltage pushes current and how resistance limits it: increasing the voltage raises current, while increasing resistance lowers it for the same voltage. If you’re thinking of the other numbers, they would require different voltages across the same 6 Ω resistor: 12 V would give 2 A, 18 V would give 3 A, and 36 V would give 6 A. So 4 A is the correct current for the given values.