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  1. J

    Volume of light

    For light it is said it has no volume and also it it waves of electric and magnetic field. But for electric and magnetic field you need space? So can they both be at the same time?
  2. J

    Batteries and the electric field inside a wire

    I have a question what does create a electric filed inside coducting wire? And is it the same field trought the whole wire? Thanx for answers.
  3. J

    Capacitor - why does current flow

    I have question, why can condesator get charged, when connected to voltage source, if for current to flow, there most be closed wire, but here it is not, but there still is current? Thanx for answers.