24. Electric Force & Field; Gauss' Law

Which of the following best describes a similarity between a compass needle in a $\mathrm{magnetic} \mathrm{field}$ and a test charge in an $\mathrm{electric} \mathrm{field}$?

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

Given that the figure (Figure 1) shows the voltage and current graphs for a capacitor, which of the following relationships correctly describes the current $I$ through the capacitor in terms of the voltage $V$ across it?

In a circuit, point a is connected to a $30 V$ battery through a $120 \Omega$ resistor and to ground through a $15 \Omega$ resistor. What is the electric potential $V_a$ at point a relative to ground?

When current from a charged $C$ capacitor lights a bulb in a simple circuit, as time goes on, the brightness of the bulb:

Object A has a charge of $+2\mu C$ and object B has a charge of $+6\mu C$. Which statement is true?

When a negatively charged object $A$ is brought near a neutral object $B$, which of the following best describes what happens to object $B$?

Which two factors directly affect the magnitude of the electrical force between two charged objects according to $Coulom➲slaw$?

Three identical metal spheres A, B, and C are initially isolated. Sphere A has a charge of $q$, sphere B has a charge of $-q$, and sphere C is uncharged. If sphere C is first touched to sphere B, removed, and then touched to sphere A, what is the final charge on each sphere?

In a flashlight circuit, what electrical property does the light bulb primarily provide?

In an electric motor, the rotating coil of wires wrapped around an iron core is a(n):

Given a segment $b$ in a circuit where a total charge of $6C$ passes through in $2s$, what is the magnitude of the current $ib$ in segment $b$?

Which symbol and unit of measurement are used for electric current?

Suppose two point charges, $q_1$ and $q_2$, are placed a distance apart, and charge $a$ is positive. What is the direction of the electric force on charge $a$ due to a nearby negative charge $b$?

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