Resistor Multiple Choice Questions and Answers

1 The statement which correctly represents Ohm’s law:

A V = IR

B V = R/I

C R = VI

D I = R/V

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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

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Answer: 0.5 A

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

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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

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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

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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

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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

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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

View Answer

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

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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

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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

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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

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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

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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

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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

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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

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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

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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

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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

View Answer