Which type of electric current is typically supplied to our homes?

Which of the following devices is used to measure electric charge directly in a circuit?

Which of the following is the correct unit for measuring resistance?

Which of the following could be the net charge found on an object?

In the context of electric charge and current, the length of time that current is flowing is known as:

Which property of batteries allows them to power devices such as radios, watches, and cell phones?

When the switch in the circuit in (figure 1) has been open for a long time and is then closed at $t=0$, what is the initial current through the resistor immediately after closing the switch?

Three point charges are located along the x-axis at positions $3\mathrm{cm}$, $8\mathrm{cm}$, and $11\mathrm{cm}$. If the charges at $3\mathrm{cm}$ and $11\mathrm{cm}$ are both $\mathrm{+2}\mathrm{\mu C}$ and the charge at $8\mathrm{cm}$ is $-2\mathrm{\mu C}$, what is the net electric force (magnitude only) on the charge at $8\mathrm{cm}$? (Assume all charges are in vacuum and use $k=9\times 109^N{m}^2{C}^{-2}$)