The lines show the equipotential contours in the plane of three point charges, Q
ID: 2221290 • Letter: T
Question
The lines show the equipotential contours in the plane of three point charges, Q1, Q2, and Q3. The values of the potentials are in kV as indicated for the +5, 0, and -5 kV contours. The positions of the charges are indicated by the dots.
A)
true or false?
The letters are on the equipotential contours.
TrueFalseThe electric field at i is stronger than at j.
TrueFalseThe electric field at k is zero.
TrueFalseCharge Q2is the largest negative charge.
TrueFalseQ1is a negative charge.
TrueFalseCharge Q3has the largest magnitude of all.
TrueFalseThe force on a proton at g points to the bottom of the page.
B)
Calculate the work required to move a charge of -0.39?10-12C from i to b.
C)
Calculate the size of the electric field at k.
D)
Calculate the size of the force on a charge of 3.20?10-19C at g.
E)
Calculate the size of Q3. The magnitudes of the three charges are in the exact ratios of 1 to 2 to 3.
Explanation / Answer
1)true 2)True 3)False 4)True 5)True 6)False Can't find rest since measurements not give you can use W = q*(change in potential) and E = -dV/dx to find and from this E find q using formula for electric field due to charge Please rate positively
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