If the inductance of a coil is 2 H and the frequency is 50 Hz, what is the induc

Practice Questions

Q1
If the inductance of a coil is 2 H and the frequency is 50 Hz, what is the inductive reactance?
  1. 100 π
  2. 100
  3. 314
  4. 628

Questions & Step-by-Step Solutions

If the inductance of a coil is 2 H and the frequency is 50 Hz, what is the inductive reactance?
  • Step 1: Identify the formula for inductive reactance, which is X_L = 2πfL.
  • Step 2: Identify the values given in the question: frequency (f) = 50 Hz and inductance (L) = 2 H.
  • Step 3: Substitute the values into the formula: X_L = 2π(50)(2).
  • Step 4: Calculate the product of 50 and 2, which is 100.
  • Step 5: Multiply 100 by 2π. Use the approximate value of π as 3.14 for easier calculation: 100 * 3.14 = 314.
  • Step 6: Multiply 314 by 2 to get 628.
  • Step 7: Conclude that the inductive reactance X_L is 628 Ω.
  • Inductive Reactance – Inductive reactance (X_L) is the opposition that an inductor presents to alternating current (AC) due to its inductance and the frequency of the AC signal.
  • Formula for Inductive Reactance – The formula for calculating inductive reactance is X_L = 2πfL, where f is the frequency in hertz and L is the inductance in henries.
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