What is the starting voltage of an AA battery used for home gadgets such as remote controls, small toys and wireless kitchen appliances?
A. 2.0 V
B. 1.5 V
C. 3.0 V
D. 2.5 V
Answer: Option B
A. 2.0 V
B. 1.5 V
C. 3.0 V
D. 2.5 V
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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