1. . The lightest particle of an atom is:
(A) Proton
(B) Electron
(C) Neutron
(D) None
2. . Proton has ___ charge:
(A) Positive
(B) Negative
(C) Neutral
(D) None
3. . Electron has ___ charge:
(A) Positive
(B) Neutral
(C) Both a & b
(D) Negative
4. . Same current flows through all resistances of ___ circuit:
(A) Parallel
(B) Series
(C) Series & Parallel
(D) None
5. . By adding resistances in series circuit, the total resistance of circuit ___:
(A) Increase
(B) Decrease
(C) Constant
(D) None
6. . If 3 resistors of 6 ohms are in series, the total resistance of circuit will be:
(A) 2 ohm
(B) 6 ohm
(C) 12 ohm
(D) 18 ohms
7. . In parallel circuit, the current is
(A) Equal
(B) unequal
(C) more powerful
(D) less powerful
8. . Which quantity adds up in series and parallel circuit?
(A) Power
(B) Resistance
(C) Current
(D) Voltage
9. . The rate of doing work is called:
(A) Energy
(B) Force
(C) Power
(D) Frequency
10. . The unit of electric power is:
(A) Watt
(B) Joule
(C) KWH
(D) Hertz
11. . Horse Power is the unit of:
(A) Power
(B) Energy
(C) Work
(D) Force
12. . Electrical energy is measured in:
(A) KWH
(B) Watt
(C) HP
(D) Nm
13. . If we multiply power with time, we get___:
(A) Voltage
(B) Electrical Energy
(C) Current
(D) Resistance
14. . According to ohm’s law, current is directly proportional to__:
(A) Current
(B) Electrical Energy
(C) Voltage
(D) Resistance
15. . According to ohm’s law, current is inversely proportional to__:
(A) Current
(B) Resistance
(C) Voltage
(D) Power
16. . 1.5A current flows through 12 Ohm resistor, circuit voltage are___:
(A) 60V
(B) 12V
(C) 18V
(D) 24V
17. . 110V Lamp has 220 Ohm resistance, circuit current is___:
(A) 0.5A
(B) 1A
(C) 1A
(D) 4A
18. . ___ is used to store charge:
(A) Inductor
(B) Capacitor
(C) Generator
(D) None
19. . Dielectric material used to store charge in capacitor is ___:
(A) Insulator
(B) Conductor
(C) Semi conductor
(D) None
20. . The unit of capacitance is:
(A) Ampere
(B) ohm
(C) Volt
(D) Farad
21. . Inductor stores energy in the form of__:
(A) Electric Field
(B) Current
(C) Resistance
(D) Magnetic Field
22. . Formula to find the value of XC:
(A) Xc= 2 π f C
(B) XC = 1/2πf C
(C) XC = 2πfL
(D) XC = 1/2πfL
23. . Unit of capacitive reactance is:
(A) Ohm
(B) Henry
(C) Ohm/m
(D) Henry/m
24. . Capacitive reactance and inductance reactance is equal at:
(A) Frequency
(B) Resonance
(C) 20˚
(D) 90˚
25. . Formula to find the impedance of R-L series circuit is:
(A) Z = √R² + XL²
(B) Z = V/I
(C) Z = Cosφ
(D) Z = √R² + XC²
26. . If the frequency of the power supply of pure capacitive circuit is halved the value of capacitive reactance will be:
(A) Half
(B) Doubled
(C) One Fourth
(D) Four times