(adsbygoogle = window.adsbygoogle || []).push({}); 1. The problem statement, all variables and given/known data

A capacitor of capacitance C stores an amount of energy E when the pd across it is V. Which line, A to D, gives the correct energy and pd when the charge is increased by 50%?

Energy pd

A) 1.25E 1.5V

B) 2.25E 1.5V

2. Relevant equations

E= 0.5 CV^2

E= 0.5 QV

C= Q/V

3. The attempt at a solution

The answer is B).

Do I have to find two simultaneous equations because I have two unknowns? But how?

Thanks :)

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# Homework Help: Energy and pd of capacitor

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