What do you need to do before you can make a hypothesis?

In a voltaic cell, electrons flow from the (positive/negative) to the (positive/negative) terminal.

Point charges q1 = 51 µc and q2 = −27 µc are placed 1.0 m apart, with q2 on the right. what is the force (in n) on a third charge q3 = 19 µc placed midway between q1 and q2? (assume the positive direction is to the right. indicate the direction with the sign of your answer.)

What is the power rating of the lightbulb if 3.0 a flow through it when connected to a 15 v battery