6. Electricity and Magnetism
Dc Circuits — Quiz
Test your understanding of dc circuits with 5 practice questions.
Practice Questions
Question 1
In a DC circuit, if the voltage across a resistor is constant, what happens to the power dissipated by the resistor if its resistance is doubled?
Question 2
A series RC circuit is connected to a DC voltage source. Which of the following statements is true regarding the energy stored in the capacitor as it charges?
Question 3
Consider a circuit with two resistors, $R_1$ and $R_2$, connected in parallel. If a third resistor, $R_3$, is added in parallel to the existing two, what happens to the total equivalent resistance of the circuit?
Question 4
In an RC circuit, the capacitor is initially charged to a voltage $V_0$ and then allowed to discharge through a resistor $R$. Which of the following differential equations describes the current $I(t)$ in the circuit?
Question 5
A DC circuit contains a battery and several resistors. If the battery's internal resistance is negligible, what is the relationship between the terminal voltage of the battery and its electromotive force (EMF)?