Answer:
1137.398 ohm's.
Explanation:
Capacitive reactance: This is the opposition to the flow of current in a a purely capacitve A.C circuit. The S.I unit of capacitive reactance is ohm's (Ω).
Mathematically, capacitive reactance can be expressed as,
Xc = 1/2πfc ........................ Equation 1
Where Xc = capacitive reactance, f = frequency, c = capacitance of the capacitor, π = pie.
Given: f = 700 kHz = 700000 Hz, C = 200 pF = 200×10⁻¹² F, π = 3.14
Substitute into equation 1
Xc = 1/(2×3.14×200×10⁻¹² ×700000)
Xc = 10¹²/87920000
Xc = 1000000000000/879200000
Xc = 1137.398 ohm's.
Hence the capacitive reactance of the capacitor = 1137.398 ohm's.
