Two light bulbs are equally bright, but one has a power of 6 W while the other has a power of 10 W. In one hour the higher power bulb uses J more energy than the lower power bulb.

Four point charges each having charge q are located at the corners of a square having sides of length a. find symbolic expressions for the following. (a) the total electric potential at the center of the square due to the four charges (use any variable or symbol stated above along with the following as necessary: ke.) vtotal= (b) the work required to bring a fifth charge p from infinity to the center of the square (use any variable or symbol stated above along with the following as necessary: w=