1.

What is the frequency range for a headphone as a detector?(a) 20 Hz to 20 kHz(b) 10 kHz to 1 MHz(c) 10 MHz to 1 GHz(d) 250 Hz to 4 kHzThe question was posed to me in an interview.My doubt is from Introduction to AC Bridges topic in portion Measurement of Inductance and Capacitance of Electrical Measurements

Answer»

The correct option is (d) 250 Hz to 4 kHz

Easiest explanation: Headphones can be USED as detectors in AC bridges in the low AUDIO frequency range. Low audio frequency range varies from 250 Hz to 4 KHz.



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