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July 24, 2014

Homework Help: 3 physics question please help quick

Posted by Sara on Monday, April 21, 2014 at 3:28pm.

Two point charges of opposite sign are brought close together. Which statement best describes the field lines of the combined point charges?
(Points : 1)
The field lines from the positive charge point toward the negative charge.

The field lines from the positive charge point away from the negative charge.

The field lines from both charges cross each other in the middle.

The field lines of both charges point away from each other.



Question 6.6. Which of the following would be true if a test charge were negative instead of positive? (Points : 1)
The field lines of negative source charges would point inward.
The field lines of negative source charges would point outward.
The field lines would stay exactly the same.
The field lines would disappear.


Question 7.7. An electric field is measured at 3.00 105 N/C at a distance from a source point charge of 3.00 106 C. How far is the point from the source charge?
(Points : 1)
0.09 m

0.30 m

0.36 m

0.60 m

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