Question

n identical capacitors are connected in series between points a and b as shown in the figure. the effective capacitance between points a and b is

Answer 1

Answer:

Correct option is

B

7.5V,−2.5V

As the all capacitance are same and in series so potential across each =10/4=2.5V

now, V

A

−V

N

=2.5+2.5+2.5=7.5

or V

A

−0=7.5⇒V

A

=7.5V

and V

N

−V

B

=2.5

or 0−V

B

=2.5

or V

B

=−2.5V