24. Electric Force & Field; Gauss' Law

Which of the following best describes an $RC$ circuit in the context of electric charge?

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)?

Which of the following units is used to measure electrical resistance?

In electrostatics, if a conductor is placed in an external electric field and is in equilibrium, what is the total surface charge $q_{\mathrm{ext}}$ on the exterior surface of the conductor?

Which device is typically used to produce alternating current?

Two point charges are placed on the x-axis: charge $q_1$ at $x=0$ and charge $q_2$ at $x=d$. If both charges are positive, what is the direction of the net electric force on $q_1$ due to $q_2$?

In the context of electric charge and semiconductor devices, what type of bias is applied to a $pn$ junction if the cathode is positive with respect to the anode?

Which of the following statements about the flow of electricity through air is correct?

Two point charges, $q=8.0\mathrm{nC}$ and $Q=12.0\mathrm{nC}$, are separated by a distance of $r=0.50m$ in vacuum. What is the magnitude of the force $F$ on the $8.0\mathrm{nC}$ charge?

A current of $0.50A$ flows through a resistor of $820\Omega$. What is the voltage across the resistor?

Which of the following factors does not affect the resistance of a conductor?

Two point charges are fixed on the y-axis at positions $(0,a)$ and $(0,-a)$. If both charges have magnitude $q$ but opposite signs, what is the direction of the electric field at the origin?

In a simple circuit consisting of a battery of emf $E$ and an external resistor $R$, the battery current $i$ is:

Which term describes the process in which electric charge is redistributed within a material, causing one side to become $\mathrm{positive}$ and the other $\mathrm{negative}$?