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    when do I use E = QV, and when do I use E = 0.5QV? it's getting ridiculous because every time I do a question on this I end up using the wrong one lol

    thanks
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    i think E = 0.5QV is when dealing with capacitors? :dontknow:

    Its been 2 years since physics A-Level so I'm probably wrong lol
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    (Original post by Barden)
    i think E = 0.5QV is when dealing with capacitors? :dontknow:

    Its been 2 years since physics A-Level so I'm probably wrong lol
    This is correct, E=0.5QV is only for capacitors, at A-Level everything else will use E=QV.
 
 
 
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