Q. In a circuit, the value of the alternating current is measured by hot wire ammeter as $10\ ampere$. Its peak value will be
A) 10 $A$
B) 20 $A$
C) 14.14 $A$
D) 7.07 $A$
Explanation
(c) Hot wire ammeter reads $rms$ value of current. Hence its peak value $= i_{rms} \times \sqrt{2} = 14.14\ amp$
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.