Question

PHY2054 2016-2 Exam 1 statement or answers the question MULTIPLE CHOICE Choose the one altemative ha bst completes the 1) 1) xand Y are two initilyndurged metal phen, on nulang tand, ed ho m=contat with each other A positively charged rod R is brought close to X as shown in part (a) of the figure. Sphere Y is now moved awayfrom as shown in partnwhat are the final change states of X and Y? A) Both X and Y are neutral. B) X is positive and Y is C) X is negative and Y is positive D) Both X and Y are negative E) X is neutral and Y is positive. 2)Two tiny beads are 25 am apart with noohercharges or Selds preset Bead A arms 10 μCof 2. charge and bead B carries 1 uC. Which one of the following statements is true about the magnitudes of the electric forces on these beads A) The force on A is exactly equal to the force on B B) The fonce on A is 10 times the force on B C) The force on A is 100 times the fonce on B D) The force on B is 100 times the force on A E) The force on B is 10 times the fonce on A 3) Two point charges, Q1 and Q2 are separated by a distance R. If the magnitudes of both charges are doubled and their separation is also doubled, what happens to the electrical force that eadh charge exerts on the other one? A) It increases by a factor of 2 B) It increases by a factor of ~2 C) It increases by a factor of 4. D) It remains the same. E) It is reduced by a factor of E

Answer 1

2 16-女て 250m luc dame aa 8.ditrong) め る (2r)2