Describe one technique you could use to measure the threshold voltage for LEDs.

A sensitive ammeter is placed in series with LED. With the increase in Voltage, measure the potential difference value when it starts conducting. Black-out and shaded vision tube is used to observe the voltage value when visible light is first observed as the voltage is increased.

Answered by Milan P. Physics tutor

6837 Views

See similar Physics A Level tutors

Related Physics A Level answers

All answers ▸

Why is the refractive index of water bigger than that of air?


How do I derive equations for Time of Flight and Range in Parabolic Motion?


Define the resistivity of a metal wire


What is simple harmonic motion?


We're here to help

contact us iconContact usWhatsapp logoMessage us on Whatsapptelephone icon+44 (0) 203 773 6020
Facebook logoInstagram logoLinkedIn logo

© MyTutorWeb Ltd 2013–2025

Terms & Conditions|Privacy Policy
Cookie Preferences