Which statement best explains why electricity should be conserved?
a)fossil fuels generate electricity and are limited in supply.
b)fossil fuels generate electricity and are expensive.
c)power plants use a lot of resources and never produce a lot of electricity.
d)power plants can use only one type of resource to produce electricity.

Two 1.20-m nonconducting wires meet at a right angle. one segment carries + 2.50 µc of charge distributed uniformly along its length, and the other carries - 2.50 µc distributed uniformly along it, as shown in fig. 21.50. ( a. find the magnitude and direction of the electric field these wires produce at point p, which is 60.0 cm from each wire. ( b. if an electron is released at p, what are the magnitude and direction of the net force that these wires exert on it?