What will be the effect on the current if the resistance of a circuit is reduced to half, keeping the voltage remains constant?
A. will be halved
B. will be doubled
C. will be one fourth
D. will be four times
Answer: Option B
A. will be halved
B. will be doubled
C. will be one fourth
D. will be four times
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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