Study for the Internet of Things (IOT102) Test. Access comprehensive flashcards and multiple choice questions, each with hints and explanations. Get prepared for your exam!

Multiple Choice

A 12 V source across a 6 ohm resistor yields what current?

Current through a resistor is found using Ohm’s law: I = V / R. With a 12 V source across a 6 Ω resistor, the current is 12 ÷ 6 = 2 A. This shows how voltage drives current and how resistance gates it: higher resistance or lower voltage yields less current, while lower resistance or higher voltage yields more. If the resistance were different, the current would change accordingly (for example, 24 Ω would give 0.5 A, 1 Ω would give 12 A).

Current through a resistor is found using Ohm’s law: I = V / R. With a 12 V source across a 6 Ω resistor, the current is 12 ÷ 6 = 2 A. This shows how voltage drives current and how resistance gates it: higher resistance or lower voltage yields less current, while lower resistance or higher voltage yields more. If the resistance were different, the current would change accordingly (for example, 24 Ω would give 0.5 A, 1 Ω would give 12 A).