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A light emitting diode(LED) has a voltage drop of 2 volt across it and passes a current of 10 mA when it operates with a 6 volt battery through a limiting resistor R. The value of R is
Options
(a) 40 kΩ
(b) 4 kΩ
(c) 200 kΩ
(d) 400 kΩ
Correct Answer:
400 kΩ
Explanation:
No explanation available. Be the first to write the explanation for this question by commenting below.
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Topics: Electronic Devices
(124)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- Two charged spheres seperated at a distance d exert a force F on each other.
- If vectors A=cos wti + sin wtj and B= cos wt/2 i + sin wt/2 j are functions of time,
- The young’s modulus of steel is twice that of brass. Two wires of same length
- A 1 µA beam of protons with a cross-sectional area of 0.5 sq.mm is moving with a velocity
- The binding energy of deutron is 2.2 MeV and that of ₂⁴He is 28 MeV.
Topics: Electronic Devices (124)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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