The two resistance of 10Ω and 20Ω in series combination are connected with 6V batteries. The electric current in the circuit will be-
A. 0.2 A
B. 0.6 A
C. 0.9 A
D. 0.3 A
Answer: Option A
A. 0.2 A
B. 0.6 A
C. 0.9 A
D. 0.3 A
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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