How does the white light produce in the tube?
A. To heat up the copper wire
B. To heat up the filament
C. To accelerate the atoms
D. To oscillate molecule
Answer: Option B
A. To heat up the copper wire
B. To heat up the filament
C. To accelerate the atoms
D. To oscillate molecule
Answer: Option B
What will be the total resistance of the three 20-Ω coils connected in series?
A. 40 Ω
B. 20 Ω
C. 60 Ω
D. 800 Ω
Superconductors are substances which
A. conduct electricity at lower temperature
B. offer high resistance to the flow of current
C. offer not resistance to the flow of current
D. conduct electricity at high temperature
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