The Student Room Group

Does changing voltage changes time take to charge it?

This is about capacitors, on first thought it shouldn't since time constant is RC but since changing voltage of source changes current as well, and the idea that any amount of charge takes the same to charge to 63% seems odd. Can anyone explain please.
(edited 5 years ago)
Original post by alvan15
This is about capacitors, on first thought it shouldn't since time constant is RC but since changing voltage of source changes current as well, and the idea that any amount of charge takes the same to charge to 63% seems odd. Can anyone explain please.


You'd expect the half life of 1g of a radioisotope to be the same as the half life of 8g of the same isotope... even though the mass of half 8g is greater than half 1g.

it's like that.

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