Electric Circuits
What components are combined to create RC circuits?
Resistors and inductors
Capacitors and inductors
Resistors and capacitors
Diodes and transistors
Two capacitors with capacitances and are connected in series. What is the equivalent capacitance of the series combination?
Capacitors with capacitances of 3 μF and 6 μF are connected in parallel. What is the equivalent capacitance?
2 μF
9 μF
18 μF
0.5 μF
Three capacitors are connected as follows: is in series with , and this combination is in parallel with . What is the equivalent capacitance of the entire combination?
1.33 F
7.33 F
8 F
12 F
A circuit contains two capacitors, and , connected in series. If and the equivalent capacitance of the series combination is , what is the value of ?
1 F
2 F
3 F
4 F
Consider a complex network of capacitors. To find the equivalent capacitance, which of the following strategies is most effective?
Replace all capacitors with a single capacitor having the average capacitance.
Simplify series and parallel combinations step by step until a single equivalent capacitor is obtained.
Ignore the capacitors with the lowest capacitance values.
Add all capacitance values together, regardless of their arrangement.
In an RC circuit, a resistor with resistance is connected in series with a capacitor of capacitance . What is the time constant of this circuit?
0.01 s
0.1 s
1 s
10 s

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In an RC circuit, if the resistance is doubled and the capacitance is halved, what happens to the time constant?
It doubles.
It halves.
It remains the same.
It quadruples.
An RC circuit has an initial time constant . If a second resistor, identical to the first, is added in series, and a second capacitor, identical to the first, is added in parallel, how does the new time constant relate to the original?
During the charging of a capacitor in an RC circuit, how does the voltage across the capacitor change over time?
It decreases linearly.
It increases linearly.
It decreases exponentially.
It increases exponentially.