Get ready for the NCEA Level 1 Energy Test. Utilize flashcards and multiple choice questions with clear explanations and hints. Prepare for success!

Multiple Choice

If voltage is fixed and resistance increases, what happens to current?

Current is how easily charges can flow, and Ohm’s law says I = V / R. With the voltage fixed, increasing resistance makes the ratio smaller, so the current decreases. Think of a water pipe with the same water pressure but a narrower pipe—less water flows. So the current drops as resistance goes up. The other options don’t fit: higher current would require lower resistance, and staying the same or oscillating would require changing conditions not present here.

Current is how easily charges can flow, and Ohm’s law says I = V / R. With the voltage fixed, increasing resistance makes the ratio smaller, so the current decreases. Think of a water pipe with the same water pressure but a narrower pipe—less water flows. So the current drops as resistance goes up. The other options don’t fit: higher current would require lower resistance, and staying the same or oscillating would require changing conditions not present here.