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Physics problems: electricity

Coulomb's law

 

Problem 1.

Two small spheres spaced 35.0cm apart   have equal charge.  How many excess electrons must be present on each sphere if the  magnitude of the force of repulsion between them is ?

Solution

 

Problem 2.

A point charge is at the point , , and a second point charge is at the point , .  Find the magnitude and direction of the net electric field at the origin.

Solution

 

Problem 12.

Suppose that of hydrogen is separated into its constituent protons and electrons, and that the protons are all grouped together at one point, and the electrons at another point, 3 meter distant. What is the magnitude of the force between the two groups of charge?

Solution

 

Problem 13.

Two small beads having positive charges 25q and q are fixed at the opposite ends of a horizontal insulating rod, extending from the origin (the location of the larger charge) to the point x = d. A third small charged bead is free to slide on the rod. At what position is the third bead in equilibrium?

Solution

 

Problem 36.

A cube of edge a carries a point charge q at each corner. Find the resultant electric force on any one of the charges.

Solution

 

Problem 92.

What is the magnitude of the electric force on current charge?

voltage

Solution

 

 

 

Problem 93.

For a system of charges shown in the figure find the magnitude of the force on voltage charge?

charge

Solution

 

Problem 94.

Find the magnitude of the force on charge charge.

voltage

Solution

 

Problem 95.

What is the magnitude of the force on current charge?

energy

Solution

 

Problem 96.

Find the magnitude of the force on electric field charge.

charge

Solution

 

Problem 97.

The force on force charge is zero. Find the value of the charge electric force.

electricity

Solution

 

 

 

Problem 98.

Find the magnitude of the force on current charge.

electricity

Solution

 

Problem 99.

If charge electric field is in static equilibrium what is the value of charge force?

current

Solution

 

Problem 100.

What is charge charge if charge current is in static equilibrium?

current

Solution

 

 

 

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