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Chapter 26: Q. 28 (page 738)

What is the equivalent capacitance of the three capacitors in Figure Ex26.28?

Short Answer

Expert verified

The equivalent capacitance of the three capacitors is25渭F.

Step by step solution

01

Given information

We need to find that the equivalent capacitance of three capacitors.

02

Capacitance of capacitor

The capacitance of the capacitors with capacitance 20渭Fand 30渭Fconnected in parallel will be given as

c12=11C1+1C2=1C1+C2C1C2=C1C2C1+C2

Putting the values we get

C12=2路10-5路3路10-55路10-s=12渭F

Now, the capacitance of the circuit is the capacitance of C12in parallel with C3=13渭F. That will be

C=C12+C3=12+13=25渭F

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