Question about ac circuits !!
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Question about ac circuits !!

[From: ] [author: ] [Date: 12-03-25] [Hit: ]
like here, have the same phase of voltage.......
Two 1μF capacitors were connected in series with a variac (220Vrms , 50Hz , 0° and 20mA output). Using a voltmeter , the supply voltage recorded was 130.7 v , Vc1 = 65.6v , Vc2 = 65.6v. Using the theory equations , determine C1, C2 and total capacitance in series.

Are the two voltages Vc1 and Vc2 in phase with each other ? Do capacitances in series combine in the same way as resistances in series ?

Can someone help please?

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Capacitors in series follow the formula

1/Ct = 1/Ca + 1/Cb

ie like resistors in parallel. The converse is also true ie capacitors in parallel just add, like resistors in series.

All capacitors sharing a common current, like here, have the same phase of voltage.
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