Resistor MCQs | Resistor Multiple Choice Questions and Answers

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Questions
1 The statement which correctly represents Ohm’s law:
A V = IR
B V = R/I
C R = VI
D I = R/V

Answer: V = IR
2 A 10 ohms resistor is powered by a 5-V battery. The current flowing through the source is:
A 10 A
B 50 A
C 2 A
D 0.5 A

Answer: 0.5 A
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3 Repeat the above problem for resistor values of 30 ohms each when the source is 60 V.
A 0.25 A
B 0.5 A
C 2 A
D 4 A

Answer: 4 A
4 Two resistors having values 18 ohms and 50 ohms are connected in series to an unknown source. An ammeter is connected to the circuit which reads 2 A. Find the input voltage to the circuit:
A 36 V
B 100 V
C 136 V
D 168 V

Answer: 136 V
5 Two parallel resistors both having their values 50 and 60 ohms are connected in parallel. The overall current provided by the 100 V source is:
A 1.72 A
B 2.88 A
C 3.66 A
D 4.52 A

Answer: 3.66 A
6 Two resistors having values 5 ohms and 10 ohms are connected in series to a 10 V source. Find the current flowing through the circuit:
A 0.66 A
B 1.5 A
C 2 A
D 2.5 A

Answer: 1.5 A
7 If 1st band = Brown; 2nd band = Black; 3rd band = Brown; and I = 50 mA, then by using Ohm law find the value of source voltage:
A 0.5 V
B 5 V
C 50 V
D 500 V

Answer: 5 V
8 If V9 = 50 V, I9 = 25 μA, then R9 = __:
A 2 MΩ
B 2 GΩ
C 1250 MΩ
D 1250 GΩ

Answer: 2 GΩ
9 If V8 = 15 kV, I8 = 2 nA, then R7 = __:
A 7500 kΩ
B 7500 GΩ
C 30 kΩ
D 30 GΩ

Answer: 7500 GΩ
10 If V5 = 99 kV, R5 = 33 GΩ, then I5 = __:
A 5 A
B 5 mA
C 5 µA
D 5 nA

Answer: 5 nA
11 If V6 = 22 V, R6 = 11 kΩ, then I6 = __:
A 5 A
B 5 mA
C 5 µA
D 5 nA

Answer: 5 nA
12 If V7 = 10 V, I7 = 1 μA, then R7 = __:
A 10 kΩ
B 10 MΩ
C 0.1 kΩ
D 0.1 MΩ

Answer: 10 MΩ
13 A resistor is color-coded with four bands, the first one being brown, second, black, third red, and fourth gold. The resistor connects to a 10 V source. Find the current flowing through the resistor.
A 1 mA
B 10 mA
C 100 mA
D 1A

Answer: 10 mA
14 If 1st band = Yellow; 2nd band = Violet; 3rd band = Brown; and V = 47 V, then I = ___?
A 0.1 A
B 0.1 mA
C 100 mA
D 470 mA

Answer: 0.1 A
15 If 1st band = Red; 2nd band = Red; 3rd band = Red; and V = 44 V, then I = ___?
A 20 A
B 20 mA
C 44 A
D 44 mA

Answer: 20 mA
16 If 1st band = Brown; 2nd band = Black; 3rd band = Green; and V = 50 V, then I = ___?
A 1 mA
B 100 μA
C 5 mA
D 50 μA

Answer: 50 μA
17 If 1st band = Brown; 2nd band = Black; 3rd band = Orange; and I = 50 mA, then by using the formula of Ohm’s law find the value of voltage source which powers the source:
A 0.5 V
B 5 V
C 50 V
D 500 V

Answer: 500 V
18 Two parallel resistors both having their values 28 ohms are connected in parallel. The overall current provided by the 28 V source is.
A 1 A
B 2 A
C 4 A
D 8 A

Answer: 2 A
19 If 1st band = Orange; 2nd band = Orange; 3rd band = Orange; and I = 10 mA, then by using the formula of Ohm’s law find the value of voltage source which powers the source:
A 3 V
B 33 V
C 330 V
D 500 V

Answer: 330 V
20 If V4 = 50 V, R4 = 10 GΩ, then I4 = __:
A 5 A
B 5 mA
C 5 µA
D 5 nA

Answer: 5 nA
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