A conductor of radius r, length L and resistivity rho has resistance R. What is the new resistance if it is stretched to 4 times its original length? Group of answer choices R/16 16R R/4 4R R

One charge is decreased to one-third of its original value, and a second charge is decreased to one-half of its original value. how will the electrical force between the charges compare with the original force? a- it will increase to six times the original force. b- it will increase to thirty-six times the original force. c- it will decrease to one-sixth the original force. d- it will decrease to one-thirty-sixth the original force.