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April 24, 2014

Homework Help: Electr. and Magnetism

Posted by Allan on Monday, January 31, 2011 at 5:00am.

1) A charge of 80nC is uniformly distributed along the x-axis from x= 0 to x= 2.0m. Determine the magnitude of the electric field at a point on the x-axis with x=8.0m.

a] 30 N/C
b] 15 N/C
c] 48 N/C
d] 90 N/C
e] 60 N/C


2) 3 point charges, 2 positive and one negative, each having a magnitude of 20uC are placed at the vertices of an equilateral triangle (30 cm on a side). What is the magnitude of the electrostatic force on one of the positive charges?

a]69N
b]40N
c]80N
d]57N
e]20N

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