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If the length and diameter of a wire of circular cross section are both tripled, the resistance will be

Two 5.0-µC point charges are 12 cm apart. What is the electric potential (relative to infinity) of this combination at the point where the electric field due to these charges is zero? 

The length of a certain wire is doubled and at the same time its radius is also doubled. What is the new resistance of this wire?

A toaster is rated at 800 W when operating at 120 V dc. What is the resistance of its heating element?

The length of a certain wire is doubled while its radius is kept constant. What is the new resistance of this wire?

Meagan and Carrie enjoy living with each other because they are able to split the rent and chores between the two of them. This illustrates what type of rewards?

Which of the following will increase the capacitance of a parallel-plate capacitor? 

If the result of your calculation of a quantity has SI units kg ∙ m2/(s2 ∙ C), that quantity could be

A dielectric material such as paper is inserted between the plates of a capacitor as the capacitor holds a fixed charge on its plates. What happens to the electric field between the plates as the dielectric is inserted?

The theoretical approach characterized by breadth, depth, and frequency is _____________.