# MCQ Questions On SI Units ## SI Units – Definition

SI units are the System International Units used in basic electronics study. The electrical units are used to measure the value of any quantity.

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## SI Units MCQs (Questions and Answers)

Q1. The SI unit of current is _____________.

1. candela
2. ampere
3. volt
4. mol

Q2. The SI unit of length is meter.         True / False

Q3. The unit of Luminous intensity is ___________.

1. candela
2. mol
3. kelvin
4. metro

Q4. The SI unit of mass is kilogram.         True / False

Q5. The SI unit of temperature in basic electronics is _____________.

1. kelvin
2. candela
3. kilogram
4. mol

Q6. The unit of time is second.                 True / False

Q7. The unit of matter is_________________.

1. mol
2. candela
3. ampere
4. kelvin

Q8. The unit of capacitance is Farad.            True / False

Q9. ___________ is the unit of electric charge.

1. mol
2. coulomb
4. ampere

Q10. The electrical unit of energy is joule.             True / False

Q11. __________ is the unit of force.

1. kelvin
2. henry
3. lumen
4. newton

Q12. The electrical unit of frequency is Hertz.           True / False

Q13. The unit of illuminance is _______________.

1. lux
2. hertz
3. henry
4. weber

Q14. Henry is the unit of inductance.               True / False

Q15. Lumen is the unit of ___________.

1. luminance flux
2. flux density
3. magnetic flux
4. power

Q16. Weber is the unit of magnetic flux.                    True / False

Q17. The unit of magnetic flux density is_______________.

1. tesla
2. lumen
3. weber
4. henry

Q18. The electrical unit of potential difference is volt.            True / False

Q19. _____________ is the unit of true power.

1. watt
2. tesla
3. ohm
4. volt

Q20. The unit of resistance is ohm.        True / False

Read More: MCQs on Atomic Structure For Competitive Exams

Q21. The unit of the solid angle is ___________.

2. mol
3. lumen
4. tesla

Q22. Angle is measure in Degree or Radian.           True / False

Q23. The unit of conductivity is _____________.

1. Siemens per meter
2. Tesla per meter
3. Mol per meter
4. Ampere per meter

Q24. The SI unit of electro-motive force (EMF) is volt.            True / False

Q25. The unit of Resistivity is ____________.

1. ohm
2. ohm-square meter
3. ohm meter
4. Siemens per meter

Q26. The unit of capacitive Reactance is ohm.            True / False

Q27. The unit of inductive reactance is _______________.

2. henry
3. ohm
4. ohm per henry

Q28. The unit of impedance is ohm.               True / False

Q29. The unit of resonant frequency is ____________.

1. ohm
2. hertz per meter
3. hertz
4. lumen per meter

Q30. The unit of noise is dB.         True / False

Q31. Oersted is the unit of ____________.

1. auxiliary magnetic field
2. flux density
3. magnetic flux
4. all are correct

Q32. The unit of conductance is Mho/Siemens.         True / False

Q33. The unit of admittance is ____________.

1. siemens
2. ampere
3. mho
4. ampere per meter

Q34. The SI unit for MMF is Amp-Turn.         True / False

Q35. The unit of Reactive Power is ____________.

1. VAR (Volt-Amp-Reactive)
2. VI
3. Watt
4. VAC

Q36. Apparent power is measured in volt-amp.         True / False