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Physics Solutions Library

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6,691 solutions

Coulomb's Law (Electric Force)

Q. Two small beads having charges q1 = +9Q and q2 = -Q are fixed on a horizontal insulating rod. The distance between q1 and q2 is d = 1.5 m  The thir...

Solved • Dec 21, 2016

Combining Capacitors in Series & Parallel

Q. What is the equivalent capacitance of the five capacitors? All capacitors are identical and have capacitance of C = 40 nF. a. 15 nF b. 24 nF c. ...

Solved • Dec 21, 2016

Gauss' Law

Q. A conducting spherical shell carrying a charge -5 nC encloses a point charge +5 nC. What is the induced charge (qout) on the "outer" surface of the...

Solved • Dec 21, 2016

Electric Field

Q. The four charges form a square of edge length a. What is the direction of the net electric field at the square's center? a. -x b. +x c. +y d. -...

Solved • Dec 21, 2016

Electric Field

Q. In the figure, point  B is a distance L away from a point charge Q. Point A is a distance 4L away from Q. What is the ratio of the electric field a...

Solved • Dec 21, 2016

Coulomb's Law (Electric Force)

Q. An equilateral triangle  ABC. A positive point charge +q is located at each of the three vertices A, B, and C. Each side of the triangle is of leng...

Solved • Dec 21, 2016

Coulomb's Law (Electric Force)

Q. Two positive point charges Q and 2Q are separated by a distance R. If the charge Q experiences a force of magnitude F when the separation is R, wha...

Solved • Dec 21, 2016