Author Question: Consider point charges of +Q and +4Q, which are separated by 3 m. At what point, on a line between ... (Read 219 times)

V@ndy87 · **on:** Jul 27, 2018

Consider point charges of +Q and +4Q, which are separated by 3 m. At what point, on a line between the two charges, would it be possible to place a charge of -Q such that the electrostatic force acting on it would be zero?

A) 3/5 m from the +Q charge
B) 1 m from the +Q charge
C) 1 m from the +4 charge
D) 3 m from the +4 charge
E) There is no such point possible.

Question 2

A heavy bus bar is 20. cm long and of rectangular cross-section, 1.0 cm 2.0 cm. What is the voltage drop along its length when it carries 4000. A? (The resistivity of copper is 1.69 10-8 -m.)

What will be an ideal response?