The filament of an electric bulb is made of______________?
Correct answer: C. tungsten
- A. carbon
- B. aluminium
- C. tungsten
- D. nickel
Explanation
Tungsten is used for incandescent bulb filaments because it has a very high melting point and can withstand intense heating while emitting light. Carbon, aluminium, and nickel are not the standard filament material in ordinary bulbs.
Report an error
The more specific you are, the faster it gets fixed. A source beats an opinion.
Prefer email? [email protected]
Practise Electronics and Devices
758 free Electronics and Devices MCQs from Electrical Engineering, each with the correct answer and an explanation. Unlimited attempts, no account needed.
Discussion
Stuck on an option, or know a faster way to get there? Ask or explain it here.
No comments yet. Be the first to explain this one.
Exams that ask Electrical Engineering questions like this
Electrical Engineering is on 2 papers prepared for on TestUstad, and all of them draw the same bank, so this question is worth knowing for every one of them.
More Electronics and Devices questions
The hot resistance of the bulb's filament is higher than its cold resistance because the temperature co-efficient of the filament is___________________?
When electric current passes through a metallic conductor, its temperature rises. This is due to__________?
A glass rod when rubbed with silk cloth is charged because__________?
The minimum charge on an ion is______________?
Varistors are______________?
Which one of the following does not have negative temperature co-efficient ____________?