Electrostatics Ques 145
- A circuit is connected as shown in the figure with the switch $S$ open. When the switch is closed, the total amount of charge that flows from $Y$ to $X$ is
$(2007,3 \mathrm{M})$
(a) zero
(b) $54 \mu \mathrm{C}$
(c) $27 \mu \mathrm{C}$
(d) $81 \mu \mathrm{C}$
Show Answer
Answer:
Correct Answer: 145.(c)
Solution:
- From $Y$ to $X$ charge flows to plates $a$ and $b$.
$$ (q _ {a}+q _ {b}) _ {i}=0,(q _ {a}+q _ {b}) _ {f}=27 \mu \mathrm{C} $$
Initial figure (when switch was open)
Final figure (when switch is closed) $\therefore \quad 27 \mu C$ charge flows from $Y$ to $X$.
$\therefore$ Correct option is (c).
BETA
