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In measuring high frequency a.c, the instrument used is the

Physics
JAMB 2011
In measuring high frequency a.c, the instrument used is the
  • A. d.c ammeter
  • B. moving coil ammeter
  • C. moving iron ammeter
  • D. hot wire ammeter
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Correct Answer: Option D
Explanation
Hot wire ammeter is used because the heat affect of A C is same as that of DC

There is an explanation video available below.

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Explanation Video

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WAEC offline past questions - with all answers and explanations in one app - Download for free
WAEC Past Questions, Objective & Theory, Study 100% offline, Download app now - 24709
WAEC May/June 2024 - Practice for Objective & Theory - From 1988 till date, download app now - 99995
Post-UTME Past Questions - Original materials are available here - Download PDF for your school of choice + 1 year SMS alerts
WAEC offline past questions - with all answers and explanations in one app - Download for free
Post-UTME Past Questions - Original materials are available here - Download PDF for your school of choice + 1 year SMS alerts
WAEC Past Questions, Objective & Theory, Study 100% offline, Download app now - 24709
WAEC May/June 2024 - Practice for Objective & Theory - From 1988 till date, download app now - 99995