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Capacitive Reactance (Xc) – Definition
When capacitor offers resistance or opposition on the way of alternating current (AC) during charging and discharge which react is called Capacitive Reactance. The symbol of capacitive reactance is Xc. It can be measured in Ohm.
Course Content:
- Introduction
- AC in Capacitive Circuit
- Capacitive Reactance (XC) Formula
- Series or Parallel Capacitive Reactances
- Capacitive Reactance Applications
Read More: MCQs on Capacitors Types (Questions and Answers)
MCQs on Capacitive Reactance (Questions and Answers)
Q1. The reactance / opposition of any capacitor for the flow of AC current is called___________.
- Resistance
- Inductance
- Capacitance
- Capacitive Reactance
Answer: d
Q2. The symbol of capacitor reactance is Cx. True / False
Answer: False ( XC )
Q3. The unit of Capacitive Reactance is ____________.
- farad
- henry
- ohm
- ampere
Answer: c
Q4. The formula to calculate the capacitive current is IC = C dv/dt . True / False
Answer: True
Q5. Series capacitive reactance formula is __________.
- XCeq = XC1 + XC2 + XC3 …
- XCeq = 1/XC1 + 1/XC2 + 1/XC3 …
Answer: a
Q6. XC is inversely promotional to the frequency. True / False
Answer: True
Q7. When the frequency is increased then what will be the capacitive reactance?
- increased
- same
- decreased
- infinity
Answer: c
Q8. If the capacitive reactance decreases then the capacitance will be increased. True / False
Answer: True
Q9. The value of π is _____________.
- 24/7
- 22/7
- 3.14
- b & c are correct
Answer: d
Q10. What is the formula to calculate the capacitive reactance.
- XC = 2πfc
- XC = XL/2πfc
- XC = 2π/fc
- XC = 1/2πfc
Answer: d
Q11. In the capacitive circuit, what will be the formula of Ohm’s Law ?
- VC = IC × C
- XC = VC / IC
- VC = IC × XC
- b & c are correct
Answer: d
Q12. Capacitor block (Not to pass) DC steady voltages inside it. True / False
Answer: True