Question

On closing the switch is the amount of charge flows from a to b is
1. 5microcoloumb
2. 10
3. 3.15
4. Zero

Answer 1

THE AMOUNT OF CHARGE FLOW FROM a TO b IS 0 .

In the given circuit when switch S is closed, charge flow from one capacitor to another till potential in each the capacitor is same because their is no potential drop across circuit.

Now, let charge q flows through  $2\ \mu F$ and accumulate at  $1\ \mu F$  when potential across both the capacitor is same.

Therefore, $V_a=V_b\\\dfrac{10-q}{2}=\dfrac{5+q}{1}\ \ \ \ { Since,\ Q=CV}$.

Solving for q we get,

$q=0 \ \mu C$.

Therefore , option 4 is correct.

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Current Electricity

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Answer 2

Answer:

The charges flowing from a to b is zero(0) .

Therefore, option 4 , zero is the correct answer.

Explanation: