Electric Charges and Fields · Class 12 · CBSE · Science Physics
A charging belt in a Van de Graaff generator strips electrons off its surface and dumps 2 x 10^9 electrons per second onto a metal dome. Roughly how…
Practice question from Electric Charges and Fields (Class 12 · CBSE · Science Physics), with the correct answer and a step-by-step solution.
easy · MCQ · Q-684AF9
A charging belt in a Van de Graaff generator strips electrons off its surface and dumps 2 x 10^9 electrons per second onto a metal dome. Roughly how long must it run continuously to build up 1 C of charge on the dome?
- A.About 50 years
- B.About 100 yearsCorrect answer
- C.About 150 years
- D.About 120 years
Solution
Find the number of electrons needed for 1 C using Q = ne, then divide by the rate and convert seconds to years.
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