# 25+ Resistive Circuits Questions

#### These are Resistive circuits Questions for Basic electrical and electronics engineering

1. Where voltage division problem arises
a) Series connected resistors
b) Parallel connected resistors
c) When resistors are equal
d) Both series and parallel resistors.

2. Where current division problem arises
a) Series connected resistors
b) Parallel connected resistors
c) When resistors are equal
d) Both series and parallel resistors.

3. If there are 3 Resistors R1, R2 and R3 in series and V is total voltage and I is total current then Voltage across R2 is
a) V R3/ R1 + R2 + R3
b) V R2/ R1 + R2 + R3
c) V R1/R1 + R2 + R3
d) V

These are Resistive circuits Questions for Basic electrical and electronics engineering

4. For a parallel connected resistor R1, R2 and a voltage of V volts. Current across the first resistor is given by
a) I R1
b) I R2
c) I R1 / R1 + R2
d) I R2 / R1 + R2

5. R1 = 1Ω, R2 = 3Ω, R3 = 5Ω and R4 = 7Ω connected in series. Total voltage = 20V, Current I, V2 =?
a) I = 1.23, V2 = 3.75
b) I = 1.25, V2 = 3.75
c) I = 1.15, V2= 3.73
d) I = 1.16, V2 = 3.72

These are Resistive circuits Questions for Basic electrical and electronics engineering

6. R1 = 1Ω, R2 = 3Ω, R3 = 5Ω and R4 = 7Ω connected in parallel. Total Current = 23A. Then V, I1 , I2 =?
a) 12.26v, 1.725, 2.875
b) 12.23v, 2.875, 1.725
c) 11.26v, 1.95, 1.74
d) 11.23v, 1.74, 1.95

7. Voltage division is necessary for parallel resistance networks
a) True
b) False

8. Why is current division necessary?
a) In series current is the same
b) In parallel current differs
c) Because the voltage is also different
d) Because of Kirchhoff’s laws.

9. The Wheatstone Bridge is mainly used to measure ______________
a) Currents
b) Voltages
c) Node potentials
d) Resistances

10. Lower resistances are difficult to measure using Wheatstone bridge circuit because of ____________
a) Leakage currents
b) I2R effects
c) Power dissipation
d) Thermal breakdown

These are Resistive circuits Questions for Basic electrical and electronics engineering

11. If P/Q=1, unknown resistance S=1000Ω and R could be varied from 0 to 100Ω then the bridge could be ___________
a) A balanced circuit
b) A rectified circuit
c) An unbalanced circuit
d) An identical circuit

12. The other name for Delta connection is ___________
a) Star connection
b) Pi connection
c) T connection
d) Y connection

13. Star connection can also be called as Y (or) T connection.
a) True
b) False

These are Resistive circuits Questions for Basic electrical and electronics engineering

14. If R2 = RC RA / (RA +RB +RC ) then R3 equals?
a) RA RB / (RA +RB +RC )
b) RC RA / (RA +RB +RC )
c) RB RC / (RA +RB +RC )
d) RX RA / (RA +RB +RC )

15. The star and delta networks would be electrically equal if resistances measured between any pair of terminals __________
a) Is different
b) Greater in star
c) Greater in delta
d) Is equal

These are Resistive circuits Questions for Basic electrical and electronics engineering

16. A Wheatstone bridge is balanced when the galvanometer shows __________ reading.
a) 0A
b) 1A
c) Infinity
d) -1A

17. __________ are difficult to measure using Wheatstone bridge.
a) Higher resistances
b) Currents
c) Lower resistances
d) Voltages

18. ____________ helps in current measurement by placing it in ____________ with the circuit element.
a) Voltameter, Parallel
b) Ammeter, series
c) Voltmeter, series
d) Ammeter, parallel

19. An ideal voltmeter has ___________ equivalent resistance and ideal ammeter has ___________ equivalent resistance.
a) Unity, Unity
b) Zero, infinite
c) Infinite, Zero
d) Zero, Zero

20. Continuous voltages (or) current signals are measured using
a) Tachometers
b) Sonometers
c) Analog meters
d) Digital meters

These are Resistive circuits Questions for Basic electrical and electronics engineering

21. Digital meters are preferable than analog meters.
a) True
b) False

22. A 20mv, 1mA d’Arsonval movement is used in an ammeter whose full-scale reading is 10 mA. Determine RA.
a) 2.222Ω
b) 6.667Ω
c) 5.92Ω
d) 3.333Ω

23. A 25mv, 2mA d’Arsonval movement is to be used in voltmeter whose full scale reading is 100v. The resistance inserted by 100v meter into circuit is ___________
a) 1 * 105Ω
b) 1 * 106Ω
c) 1 * 104Ω
d) 1 * 103Ω

24. An ideal voltmeter functions as __________ circuit.
a) A short
b) An open
c) A power
d) An infinite

25. An ideal ammeter functions as __________ circuit.
a) A short
b) An open
c) A power
d) An infinite

These are Resistive circuits Questions for Basic electrical and electronics engineering

26. A 100mv, 5mA d’Arsonval movement is to be used in an ammeter whose full-scale reading is 1A. Calculate RA.
a) 0.7 ohms
b) 0.5 ohms
c) 0.1 ohms
d) 0.2 ohms

27. A 122mv, 12mA d’Arsonval movement is to be used in voltmeter whose full scale reading is 120v. The resistance inserted by 120v _____________
a) 1200Ω
b) 12000Ω
c) 1000Ω
d) 10,000Ω

28. The below circuit is valid.

a) False
b) True