LDR FINAL PAPER 2026 AUTHENTIC
SOLVED COLLECTION
◉What is an insulator? Answer: An insulator is a material that
resists the flow of electric current, preventing it from passing
through.
◉What is the conduction band? Answer: The conduction band is the
range of electron energy levels in a solid where electrons can move
freely and conduct electricity.
◉What is the valence band? Answer: The valence band is the energy
band in a solid where the electrons are bound to atoms and are not
free to conduct electricity.
◉What is a band gap? Answer: The band gap is the energy difference
between the conduction band and the valence band in a
semiconductor or insulator.
◉What are common applications for an LDR? Answer: Common
applications for an LDR include light sensors, automatic street lights,
and light-activated switches.
