In a circuit diagram,
The given symbol is used as follows:
A. A wire joint
B. A battery B
C. An electric bulb
D. A resistor of resistance R
Answer: Option D
A. A wire joint
B. A battery B
C. An electric bulb
D. A resistor of resistance R
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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