Two small balls, each of mass 5.0 g, are attached to silk threads 50 cm long, which are in turn tied to the same point on the ceiling, as shown in figure below. When the balls are given the same charge $Q$, the threads hang at 5.0° to the vertical, as shown. What is the magnitude of $Q$? What are the signs of the two charges?
What is the current supplied by the battery in the following circuit?
15 $\Omega$ 15 $\Omega$ 15 $\Omega$
5.0 V