Created by StemPy LabA battery has an emf of and an internal resistance of . A variable resistor is connected across it and adjusted until it takes the greatest possible power. That greatest power, in watts, is ____.
← All Quizzes
← A spring of force constant 800 N/m is already stretched by 10 cm. The work needed to stretch it slowly from 10 cm to 20 cm, in joules, is ____.A simple microscope (a magnifying glass) is a convex lens of focal length 5 cm. It is used so that the final image is at the near point of the eye, 25 cm away. Its magnifying power is ____. →
Discussion (0)
Log in to join the discussion.
Loading…