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

A solar panel delivering 50 W for 6 hours produces how much energy in joules?

The energy produced equals power × time. Use power in watts and time in seconds, so convert 6 hours to seconds: 6 × 3600 = 21,600 seconds. Multiply: 50 W × 21,600 s = 1,080,000 J. So the panel delivers 1,080,000 joules of energy. The other numbers come from not converting hours to seconds or from using a different time value, so they don’t match the correct energy.

The energy produced equals power × time. Use power in watts and time in seconds, so convert 6 hours to seconds: 6 × 3600 = 21,600 seconds. Multiply: 50 W × 21,600 s = 1,080,000 J. So the panel delivers 1,080,000 joules of energy.

The other numbers come from not converting hours to seconds or from using a different time value, so they don’t match the correct energy.