Given that the current in a circuit is described by $i\left(t\right)=i_0{e}^{-bt}$ where $b>0$, which of the following best describes the behavior of the total charge $Q$ that flows through the circuit as $t\to \infty$?

Three identical point charges $q$ are placed at three corners of a square of side $l$. What is the magnitude of the net electrostatic force experienced by the charge at the empty corner due to the other three charges?

Two protons are released from rest when they are $0.750nm$ apart. What is the direction of the force each proton experiences due to the other?

A collection of $1.875\times {10}^{19}$ electrons has the charge of which of the following values?

Two equally charged particles are held $3.2$ meters apart in vacuum. If the electrostatic force between them is $2.0\times {10}^{-6}$ newtons, what is the magnitude of the charge on each particle?

For a long hollow cylindrical conductor carrying a steady current, what is the electric field inside the hollow region (but not inside the conducting material itself)?

Four point charges of equal magnitude $q$ are placed at the corners of a square of side $a$. What is the magnitude of the net electric force experienced by the charge at the lower left corner due to the other three charges?

If a wire carries a current $i$ into a junction, and two wires carry currents $i_1$ and $i_2$ away from the junction, which equation correctly expresses the conservation of electric charge at the junction?