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MCQ Practice Question
Signals & SystemsZ-Transform

If h[n]=(0.5)^n u[n], H(z) is?

  • A1/(1-0.5z^-1)
  • B1/(1+0.5z^-1)
  • Cz^-1/0.5
  • D1-0.5z^-1
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Correct Answer: A. 1/(1-0.5z^-1)
Explanation: The Z-transform of a^n u[n] is 1/(1-az^-1), with |z|>|a|.
Reference: Standard signals and systems: z-transform
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