Asked by Dustin McKee on Apr 25, 2024
Verified
A 35 μ F capacitor is connected to a 60-Hz, 120 V supply. What is the XC of the capacitor?
A) 75.79 Ω
B) 80.33 Ω
C) 83.2 Ω
D) 93.43 Ω
Capacitive Reactance
The opposition offered by a capacitor to the flow of alternating current, inversely proportional to the frequency of the current and the capacitance.
Frequency Supply
Refers to the rate at which electrical power is supplied to a device or system, typically measured in hertz (Hz).
- Acquire knowledge about the notion of capacitive reactance and the process for determining its value.
- Correlate variations in frequency with modifications in capacitive reactance.
Verified Answer
KL
Kelsey LawlerApr 26, 2024
Final Answer :
A
Explanation :
The capacitive reactance (Xc) of a capacitor can be calculated using the formula Xc = 1 / (2πfC), where f is the frequency in hertz and C is the capacitance in farads. Substituting the given values (f = 60 Hz, C = 35 μF = 35 × 10^-6 F) into the formula gives Xc = 1 / (2π × 60 × 35 × 10^-6) ≈ 75.79 Ω.
Learning Objectives
- Acquire knowledge about the notion of capacitive reactance and the process for determining its value.
- Correlate variations in frequency with modifications in capacitive reactance.