A positively charged particle projected towards West is deflected towards North by a magnetic field. What is the direction of magnetic field?
A. Towards South
B. Towards East
C. Downward
D. Upward
Answer: Option D
A. Towards South
B. Towards East
C. Downward
D. Upward
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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