A fuse is a
A. safety device and regulates flow of current
B. made up of tin and lead alloy
C. has low melting point
D. All of the above
Answer: Option D
A. safety device and regulates flow of current
B. made up of tin and lead alloy
C. has low melting point
D. All of the above
Answer: Option D
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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