1. Electrical resistance is measured in which unit?
a) Volt
b) Ohm
c) Ampere
d) Farad
Answer: b) Ohm
2. 4 ElectricPracticals7Ohms law and R I consequences of Ohms Law Resistance Voltage Current circuits in series and parallel Ohmic nonohmic…
a) Volt, Amp, and Watt.
b) Voltage, current, and Resistance.
c) current, resistance, and capacitive
d) (‘Voltage’, ‘current’, ‘inductance’)
Answer:b) Voltage, current, and Resistance.
3. is there only to throw a capacitor into the circuit?
a) To store electrical charge
b) To oppose the current
c) To convert AC to DC
d) To amplify voltage
Answer: a) To store electrical charge
4. What is a Diode Used For?
a) Amplify signals
b) Convert AC to DC
c) Store energy
d) They allow current only in 1 direction
Answer: d) They allow current only in 1 direction
5. Which Is The Most Used Semiconducting Material?
a) Copper
b) Silicon
c) Gold
d) Iron
Answer: b) Silicon
6. What is the total resistance
a) Rtotal=R1×R2
b) Rtotal=R1+R2
​c) Rtotal=1/R1+1/R2
​d) Rtotal=R1/R2
Answer: b) Rtotal=R1+R2
7. Parallel Circuit: What is the difference between the total resistance of a parallel circuit and the smallest individual resistance?
a) Same as least resistance
b) Over minimum resistance
c) Greater Resistance Than Minimum
Q) Equal to the sum of all resistance.
Answer: c) Greater Resistance Than Minimum
8. Transistors : A simple Circuit Application
a) Stores electrical energy
b) Amplifies current
c) Resists current flow
d) Converts AC to DC
Answer:b) Amplifies current
9. The looped law of the current must equal zero.
a) Ohm’s Law
b) Kirchhoff Voltage LAW (KVL)
c) Coulomb’s Law
Kirchhoff’s Current Law (KCL)
Answer: b) Kirchhoff Voltage LAW (KVL)
10. CapacitanceTouch 1 Farad or andre31_putstr Q3 Flow Chart Output 2_signature_image intersperse(“,”, k => “+”,”[existence of a allo…
a) Farad
b) Ohm
c) Henry
d) Joule
Answer: a) Farad
11. Basic Inductor operation.
a) Energy captured in the magnetic field
b) To resist current
c) To store charge
d) To convert AC to DC
Answer: a) Energy captured in the magnetic field
12. What is the use of Zener diode?
a) Rectification
b) Voltage regulation
c) Amplification
d) Energy storage
Answer: b) Voltage regulation
13 . If the current was doubled what would be affected — in terms of power dissipation in the circuit?
a) It stays the same
b) It is doubled
c) It is quadrupled
d) It is halved
Answer: c) It is quadrupled
14. Which one is the passive component (a) or (b)?
a) Transistor
b) Diode
c) Capacitor
d) LED
Answer: c) Capacitor
15. Which of those following are bi-directional current flows This is a category A device. Pulsator (b) ——> Triode (c) ——- > Migration gate (d)——– > Diode
a) Zener diode
b) Transistor
c) Capacitor
d) Inductor
Answer: a) Zener diode
16. The most useful thing about any Op-Amp?
a) Voltage amplification
b) Current regulation
c) Energy storage
d) Rectification
Answer: a) Voltage amplification
17. What Instrument is for Alternating currents to Direct Currents Conversion
a) Resistor
b) Capacitor
c) Rectifier
d) Transformer
Answer:c) Rectifier
18. What does an LED stand for?
a) Light Energy Diode
b) Light Emitting Diode
c) Low Energy Diode
d) Lateral Emitting Diode
Answer: b) Light Emitting Diode
19. There are two arms, and the current divides at every fork in the circuit and flows back around to rejoin itself.
a) Current is the same across all components.
b) Second System: Voltage → single conductor carries voltage for all intended components
c)v Vin=V1 + V2+… + Vn Additive Resistance
d) Less power loss.
Answer: b) Second System: Voltage → single conductor carries voltage for all intended components
20. Why USE HEAT SINK FOR ELECTRONIC CIRCUITS?
a) To store heat
b) To regulate voltage
c) Chill components to extract heat from it
d) To amplify voltage
Answer: c) Chill components to extract heat from it
21. Mechanical energy storage in an electric field
a) Resistor
b) Capacitor
c) Inductor
d) Transformer
Answer: b) Capacitor
22. What is the purpose of a fuse in a circuit?
a) Stores charge
b) Amplifies current
c) Avoid flushing your circuits with high current and trillsæ–æ¢
d) Converts AC to DC
Answer: c) Avoid flushing your circuits with high current and trillsæ–æ¢
23. Return to the framework; What -TIIXS a transformer in an AC circuit.
a) Change in the voltage level
b) To amplify the current
c) To store energy
d) To rectify the current
Answer: a) Change in the voltage level
24. Capacitor role in AC circuit.
a) To store energy
b) Blocking DC and passing AC
c) To amplify signals
d) To convert AC to DC
Answer: b) Blocking DC and passing AC
25. STATES THAT THE SUM OF CURRENT ENTERING A JUNCTION MUST BE = THE SUM OF CURRENT LEAVING A JUNCTION.
a) Kirchhoff’s Voltage Law
b) Coulomb’s Law
c) Kirchhoff’s Current Law
d) Ohm’s Law
Answer: c) Kirchhoff’s Current Law
26. What is the power that a 10Ω resistor will need with a magnitude of current through it being 2Amps?
a) 20W
b) 10W
c) 40W
d) 4W
Answer: c) 40W
27. Time Constant of an RC Circuit (Ï„)
a) Ï„=R+C
b) Ï„=RC
c) Ï„=1/RC
d) Ï„=R/C
Answer: b) Ï„=RC
28. What are low-pass filters that pass the signals below a particular frequency and deny or block away higher-frequency signals?
a) High-pass filter
b) Low-pass filter
c) Band-pass filter
d) Notch filter
Answer: b) Low-pass filter
29. By the way, how are current (I), voltage (V), and power(P) related to each other?
a) P=V^2/I
b) P=VI
c) P=V/I
d) P=I^2V
Answer: b) P=VI
30. What is the formula for energy stored in an inductor?
a) E=1/2LI2
b) E=LI
c) E=LI2​
d) E=1/2CV2
Answer: a) E=1/2LI2
31. A series circuit with a double increased resistance results in the current…
a) Current doubles
b) Current halves
c) Current remains the same
d) Voltage doubles
Answer: b) Current halves
32. A device used to maintain the voltage levels stable in a circuit is called?
a) Zener diode
b) Transformer
c) Capacitor
d) Inductor
Answer: a) Zener diode
33. Frequency and Wavelength of a signal related to each other _
a) Directly proportional
b) Inversely proportional
c) No relation
d) Constant
Answer: b) Inversely proportional
34. What is the “BIASING” of transistor circuits?
a) Applying a voltage to set the operating point
b) Amplifying voltage
c) Rectifying current
d) Storing charge
Answer: a) Applying a voltage to set the operating point
35. Inductance is measured in?
a) Henry
b) Farad
c) Joule
d) Watt
Answer: a) Henry