1-Which of the following general statements for any electric fieldlines are true? Give ALL correct answers in alphabetical order,without spaces, i.e., B, AC, BCD...
A) E-field lines do not begin or end in a charge-free region(except at infinity).
B) A point charge q, released from rest will initially move alongan E-field line.
C) E-field lines may cross.
D) E-field points outward from + charges.
E) E-field lines make circles around - charges.
F) Where the E-field lines are denser the E-field must bestronger.
2-a-Three charges, Q1, Q2, and Q3 are located in a straight line.The position of Q2 is 0.246 m to the right of Q1. Q3 is located0.136 m to the right of Q2. The force on Q2 due to its interactionwith Q3 is directed to the (Give ALL correct answers, i.e., B, AC,BCD...)
A) right if the two charges are negative.
B) left if the two charges have opposite signs.
C) right if the two charges have opposite signs.
D) left if the two charges are negative.
E) left if the two charges are positive.
b-In the above problem, Q1= 1.90x10-6 C, Q2=-3.22 x10-6 C, and Q3=3.18 x10-6 C. Calculate the total force on Q2. Give with the plussign for a force directed to the right.
c-Now the charges Q1= 1.90x10-6 C and Q2= -3.22 x10-6 C are fixedat their positions, distance 0.246 m apart, and the charge Q3= 3.18x10-6 C is moved along the straight line. For what position of Q3relative to Q1 is the net force on Q3 due to Q1 and Q2 zero? Usethe plus sign for Q3 to the right of Q1.
1-Which of the following general statements for any electric fieldlines are true? Give ALL correct answers in alphabetical order,without spaces, i.e., B, AC, BCD...
A) E-field lines do not begin or end in a charge-free region(except at infinity).
B) A point charge q, released from rest will initially move alongan E-field line.
C) E-field lines may cross.
D) E-field points outward from + charges.
E) E-field lines make circles around - charges.
F) Where the E-field lines are denser the E-field must bestronger.
2-a-Three charges, Q1, Q2, and Q3 are located in a straight line.The position of Q2 is 0.246 m to the right of Q1. Q3 is located0.136 m to the right of Q2. The force on Q2 due to its interactionwith Q3 is directed to the (Give ALL correct answers, i.e., B, AC,BCD...)
A) right if the two charges are negative.
B) left if the two charges have opposite signs.
C) right if the two charges have opposite signs.
D) left if the two charges are negative.
E) left if the two charges are positive.
b-In the above problem, Q1= 1.90x10-6 C, Q2=-3.22 x10-6 C, and Q3=3.18 x10-6 C. Calculate the total force on Q2. Give with the plussign for a force directed to the right.
c-Now the charges Q1= 1.90x10-6 C and Q2= -3.22 x10-6 C are fixedat their positions, distance 0.246 m apart, and the charge Q3= 3.18x10-6 C is moved along the straight line. For what position of Q3relative to Q1 is the net force on Q3 due to Q1 and Q2 zero? Usethe plus sign for Q3 to the right of Q1.
