Resistor Objective Type Questions and Answers

Questions

21 If I3 = 100 µA, R3 = 50 MΩ, then V3 = __:

A 5000 V

B 500 V

C 5 V

D 0.5 V

View Answer

Answer: 5000 V

22 If I2 = 100 µA, R2 = 50 kΩ, then V2 = __:

A 5000 V

B 500 V

C 5 V

D 0.5 V

View Answer

Answer: 5 V

23 If I1 = 50 mA, R1 = 50 kΩ, then V1 = __:

A 1 kV

B 2.5 kV

C 5 kV

D 10 kV

View Answer

Answer: 2.5 kV

24 An unknown resistor has 5 mA current flowing through it when 10 volts are applied to it. For the same resistor, the application of 20 volts will result in the current flow of:

A 2 mA

B 5 mA

C 10 mA

D 50 mA

View Answer

Answer: 10 mA

25 An electrical bulb draws 5 A current when connected to a 100-V wall outlet, the resistance of bulb is:

A 5 Ω

B 20 Ω

C 100 Ω

D 500 Ω

View Answer

Answer: 20 Ω

26 The potential difference across a 5 kΩ is 12 V. Find the current flowing through the resistor:

A 60 mA

B 2.4 mA

C 1.77 mA

D 0.998 mA

View Answer

Answer: 2.4 mA

27 The water heating rod draws 10 A current when connected to certain power source. The resistance of rod is 12 Ω. The source voltage is:

A 1.2 V

B 120 V

C 1200 V

D None of these

View Answer

Answer: 120 V

28 An electric kettle with 50-Ω heat element is powered by a 230-V wall outlet. The current flowing through kettle is:

A 0.217 A

B 4.6 A

C 10.86 A

D 11500 A

View Answer

Answer: 4.6 A

29 Components which obey Ohm’s law are known as:

A Resistors

B Ohmic components

C Non-ohmic components

D None of these

View Answer

Answer: Ohmic components

30 Ohmic components have a __________ V-I curve:

A Straight line VI curve

B Parabolic VI curve

C Non-linear VI curve

D Sinusoidal VI curve

View Answer

Answer: Straight line VI curve

31 Unit of resistance is:

A Volt

B Watt

C Ohms

D Ampere

View Answer

Answer: Ohms

32 Unit of power is:

A Volt

B Watt

C Coulomb

D Ampere

View Answer

Answer: Watt

33 Unit of current is:

A Volt

B Watt

C Coulomb

D Ampere

View Answer

Answer: Ampere

34 Unit of voltage is:

A Volt

B Watt

C Coulomb

D Ampere

View Answer

Answer: Volt

35 If V = 50 V and I = 5 A, then R = ___:

A 50 Ω

B 5 Ω

C 10 Ω

D 2 Ω

View Answer

Answer: 10 Ω

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