Recent content by adityatandon

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    Graduate Explaining Why Total Charge Induced = -q for Image Problem

    Consider the classic image problem with a conducting plane and a point charge. After finding out the charge density on the plane we integrate to find out the total charge induced. It comes out to be "-q",where q is the charge outside- My book says "It comes out to be -q, as you can convince...
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    Undergrad Why is the concept of amount of substance as a quantity confusing?

    Err... that depends on how we define 'amount of substance' So we have a number (one mole) as a unit ? Appears strange...
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    Undergrad Why is the concept of amount of substance as a quantity confusing?

    I never really understand why we should have a 'unit' for a 'count' i.e. the mole. And what is the need of assigning a separate quantity, the amount of substance... we already have 'mass'; don't we ? P.S. - I mistyped the topic title... It should be "Amount Of Substance as a quantity"