Series and parallel combinations of resistors - One Line Questions
1.
Three resistors 1Ω, 2Ω, and 3Ω are connected in parallel. The equivalent resistance is approximately: —
0.41Ω
2.
Three resistors 1Ω, 2Ω, and 3Ω are connected in series. The equivalent resistance is: —
6.00Ω
3.
Consider a circuit with two resistors, R1 = 5Ω and R2 = 15Ω, connected in parallel. If the total current entering the parallel combination is 2A, what is the current through R1? —
1.5A
4.
Consider a circuit with two resistors, R1 = 5Ω and R2 = 15Ω, connected in parallel. If the total current entering the parallel combination is 2A, what is the current through R2? —
0.5A
5.
Consider three resistors 2Ω, 3Ω, and 5Ω. If they are connected in series, the total resistance will be: —
10Ω
6.
Consider three resistors 2Ω, 3Ω, and 5Ω. If they are connected in parallel, the total resistance will be: —
1.85Ω
7.
If a 12V battery is connected across a series combination of 2Ω and 4Ω resistors, the current in the circuit is: —
2A
8.
If a 12V battery is connected across a parallel combination of 2Ω and 4Ω resistors, the total current drawn from the battery is: —
6A
9.
A 10Ω resistor and a 20Ω resistor are connected in series. What is the equivalent resistance? —
30Ω
10.
A 10Ω resistor and a 20Ω resistor are connected in parallel. What is the equivalent resistance? —
6.67Ω
11.
In a series combination of resistors, the current flowing through each resistor is: —
The same
12.
In a parallel combination of resistors, the voltage across each resistor is: —
The same
13.
If a battery is connected to resistors in series, the total potential drop across all resistors is: —
Equal to the battery voltage
14.
If a battery is connected to resistors in parallel, the potential difference across each parallel branch is: —
Equal to the battery voltage
15.
In a parallel circuit, if one branch is opened, the current: —
Continues to flow in the other branches
16.
When resistors are connected in series, the total conductance is: —
Less than the smallest individual conductance
17.
If R1, R2, R3 are in parallel, 1/Req = 1/R1 + 1/R2 + 1/R3. This is derived from: —
Ohm's Law and Kirchhoff's Current Law
18.
When resistors are connected in parallel, the total conductance is: —
Equal to the smallest individual conductance
19.
When resistors are connected in series, the total resistance is: —
Greater than the largest individual resistance
20.
When resistors are connected in parallel, the total resistance is: —
Less than the smallest individual resistance
21.
For a parallel circuit with a fixed voltage source, the power dissipated is maximum in the resistor with: —
Minimum resistance
22.
If R1, R2, R3 are in series, the equivalent resistance Req = R1 + R2 + R3. This is a direct application of: —
Kirchhoff's Voltage Law
23.
If a resistor has zero resistance, it is considered a: —
Short circuit
24.
An ammeter is always connected in _______ with the component through which the current is to be measured. —
Series
25.
A fuse wire is always connected in _______ with the appliance it protects. —
Series
26.
Which combination of resistors is typically used to increase the overall voltage delivered by a power source? —
Series combination
27.
Kirchhoff's voltage law is primarily applied to analyze circuits with: —
Series combinations
28.
A wire of resistance R is cut into two equal halves. These halves are then connected in parallel. The new resistance is: —
R/4
29.
A wire of resistance R is cut into two equal halves. These halves are then connected in series. The new resistance is: —
R
30.
If n identical resistors each of resistance R are connected in series, the equivalent resistance is: —
nR
31.
If n identical resistors each of resistance R are connected in parallel, the equivalent resistance is: —
R/n
32.
If a resistor R is split into N equal parts and all parts are connected in parallel, the equivalent resistance is: —
R/(N^2)
33.
If a resistor R is split into N equal parts and all parts are connected in series, the equivalent resistance is: —
NR
34.
If two resistors of resistance R1 and R2 are connected in series, their equivalent resistance Req is given by: —
Req = R1 + R2
35.
If two resistors of resistance R1 and R2 are connected in parallel, their equivalent resistance Req is given by: —
1/Req = 1/R1 + 1/R2
36.
In a series circuit, the voltage across individual resistors divides in proportion to their: —
Resistance
37.
In a parallel circuit, the current through individual resistors divides in proportion to their: —
Conductance
38.
For a series circuit, the power dissipated is maximum when: —
Current is maximum
39.
A voltmeter is always connected in _______ with the component across which the voltage is to be measured. —
Parallel
40.
Which type of connection is preferred for heating elements to ensure uniform heating? —
Parallel
41.
A combination of resistors where some are in series and some are in parallel is called a: —
Mixed or complex circuit
42.
Which combination of resistors is typically used to increase the total current capacity of a circuit? —
Parallel combination
43.
Kirchhoff's current law is primarily applied to analyze circuits with: —
Parallel combinations
44.
If a circuit path has infinite resistance, it is considered an: —
Open circuit
45.
In a series circuit, if one resistor is removed or breaks, the circuit becomes: —
Open-circuited
46.
The equivalent resistance of two resistors in parallel is always: —
Less than the smallest resistance
47.
The equivalent resistance of two resistors in series is always: —
Greater than the largest resistance
48.
In a series circuit containing identical resistors, the voltage drop across each resistor is: —
Equal
49.
In a parallel circuit containing identical resistors, the current through each resistor is: —
Equal
50.
What is the unit of electrical resistance? —
Ohm