Electrostatics Question 708

Question: Electric lines on the right have twice the separation of those on the left. If a charge particle takes time t to move a distance x in left region, then it will take time to travel the same distance in the right side region is:

Options:

A) $ \frac{t}{2} $

B) $ t $

C) $ \sqrt{2}t $

D) $ 2t $

Show Answer

Answer:

Correct Answer: C

Solution:

[c] $ x=\frac{1}{2}at^{2}=\frac{1}{2}( \frac{Eq}{m} )t^{2}\text{ and }x=\frac{1}{2}( \frac{Eq}{2m} )t{{’}^{2}} $

$ \therefore t’=\sqrt{2}t. $



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