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Two identical capacitors store different amounts of energy: capacitor A stores 1.4 x 10-3 J, and...

Two identical capacitors store different amounts of energy: capacitor A stores 1.4 x 10-3 J, and capacitor b stores 7.8 x 10-4 J. The voltage across the plates of capacitor B is 12 V. Find the voltage across the plates of capacitor A.

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Answer #1

To find the voltage across the plates of capacitor A we divide the energies of capacitor A and B .Energy stored by capacitor has formula CV^2/2 .We have taken capacitance of both capacitors equal because capacitor A and B are identical.The calculated value of voltage across capacitor A is 16.8 V

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