Physics Class 12
Solutions to CBSE Sample Paper - Physics Class 12

A student connects the blue coloured LED as shown in the figure. The LED did not glow when switch S is closed. Explain why ?

Question 35 - LED is a heavily doped P-N junction which - teachoo.jpg



LED is reversed biased that is why it is not glowing.

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Davneet Singh

Davneet Singh has done his B.Tech from Indian Institute of Technology, Kanpur. He has been teaching from the past 14 years. He provides courses for Maths, Science, Social Science, Physics, Chemistry, Computer Science at Teachoo.