If a circuit has 240 V and a resistance of 5 Ω, what is the current?

Prepare for the NCCR Electrical Exam. Study using flashcards and multiple choice questions, each with hints and explanations. Get exam-ready today!

Multiple Choice

If a circuit has 240 V and a resistance of 5 Ω, what is the current?

Explanation:
Current in a circuit comes from Ohm’s law: I = V / R. With 240 volts across a 5 ohm resistance, the current is 240 ÷ 5 = 48 amperes. This is the direct result of applying the formula to the given values. The other numbers would require different resistances (for example, 240 V across 10 Ω would give 24 A, or across 4 Ω would give 60 A), but for 5 Ω the calculation yields 48 A.

Current in a circuit comes from Ohm’s law: I = V / R. With 240 volts across a 5 ohm resistance, the current is 240 ÷ 5 = 48 amperes. This is the direct result of applying the formula to the given values. The other numbers would require different resistances (for example, 240 V across 10 Ω would give 24 A, or across 4 Ω would give 60 A), but for 5 Ω the calculation yields 48 A.

Subscribe

Get the latest from Passetra

You can unsubscribe at any time. Read our privacy policy