Electric field lines
A. can never intersect
B. do not start in mid space
C. are perpendicular to the surface of a charged conductor
D. All of the above
Answer: Option D
A. can never intersect
B. do not start in mid space
C. are perpendicular to the surface of a charged conductor
D. All of the above
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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