Blog

A conducting sphere is charged up such that the potential on its surface is 100 V (relative to infinity). If the sphere’s radius were twice as large, and the charge on the sphere was double, what would be the potential on the surface relative to infinity?

In the following uniform electric field, directed from left to right, three points of A, B, and C are shown.  Which of the following statement about the electric potential is true?

An ideal air-filled parallel-plate capacitor has round plates and carries a fixed amount of equal but opposite charge on its plates. All the geometric parameters of the capacitor (plate diameter and plate separation) and the charge are now doubled. If the original capacitance was C0, what is the new capacitance?

The capacitors in the network shown in the figure all have a capacitance of 5.0 µF. What is the equivalent capacitance, Cab, of this capacitor network?

You are given a copper bar of dimensions 3 cm × 5 cm × 8 cm and asked to attach leads to it in order to make a resistor.(If you want to achieve the LARGEST possible resistance, you should attach the leads to the opposite faces that measureA) 3 cm × 5 cm.B) 3 cm × 8 cm.C) 5 cm × 8 cm.D) Any pair of faces produces the same resistance.

At a distance D from a very long (essentially infinite) uniform line of charge, the electric field strength is 1000 N/C. At what distance from the line will the field strength to be 500 N/C?

An ideal air-filled parallel-plate capacitor has round plates and carries a fixed amount of equal but opposite charge on its plates. All the geometric parameters of the capacitor (plate diameter and plate separation) are now doubled and the charge is reduced by one half. If the original capacitance was C0, what is the new capacitance?

The word biannual means twice a year.

The word wrap feature automatically ends a line and moves the insertion point to the next line.

A paragraph should include a topic sentence.