Why is the filament of the electric bulb usually of tungsten?
A. Due to its high conductivity and melting point
B. Due to its high resistivity and melting point
C. Due to its high resistivity and boiling point
D. Due to its high conductivity and boiling point
Answer: Option B
Related Questions on Electricity and Magnetism
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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