Part A: Conceptual Questions: Select the best answer for any five of the followi
ID: 2304908 • Letter: P
Question
Part A: Conceptual Questions: Select the best answer for any five of the following 6 questions/problems (line out the one not to be graded!!). (4 points each) s7 The figure shows the electric field lines in the vicinity of two point charges. Which one of the following statements concerning this situation is true? 1. q1 is negative and q2 is positive. b. The magnitude of the ratio (q2/q1) is 0.7 & Both q1 and q2 have the same sign of charge. d.The magnitude of the electric field is the same everywhere e electric field is strongest midway between the charges 2. A rubber rod with a negative charge on it is brought close to but does not touch an electroscope, which is initially uncharged. With the ruober rod close by, a connection between the electroscope and ground is made. The ground connection is removed and then the rubber rod is taken away. Next a positively charged glass rod is brought near to the electroscope. Which of the following best describes what is observed? a. When the rubber rod is removed, the electroscope arm remains deflected and when the glass rod is brought near the deflection increases. When the rubber rod is removed, the electroscope arm remains deflected and en the glass rod is brought near the deflection decreases. hen the rubber rod is removed, the electroscope arm returns to its un- deflected position and when the glass rod is brought near a deflection occurs When the rubber rod is removed, the electroscope arm returns to its un- deflected position and when the glass rod is brought near no deflection occurs None of the above describes what occurs. cube sits in an electric field by E (2i+3j-2 k). One corner of a cube is at the origin with the opposite corner located at (1, 1. 1)m-What is the net fux through the cube in 6 c. 0 e. None of theseExplanation / Answer
The electric field lines diverge away from the negative charge and converge at the positive charge which means
q1 is negative and q2 is positive.
we are asked to select the best answer so the option (a) is the most suitable one.
(2)
when the rod is close by the induction happens and deflection will still be there as the rod is present even after grounding. Now a negatively charged rod is brought near by so induction of opposite charge is supposed to take place. so the deflection should decrease.
option - 2