Three resistors with magnitudes 2, 4 and 8Ω are connected in parallel, then equivalent resistance of the system would be
A. less than 2Ω
B. more than 2Ω but less than 4Ω
C. 4Ω
D. 14Ω
Answer: Option A
A. less than 2Ω
B. more than 2Ω but less than 4Ω
C. 4Ω
D. 14Ω
Answer: Option A
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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