a polythene piece , rubbed with wool, is found to have a negative charge of 4× 10^-7 . the number of electrons transferred is ?
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a polythene piece , rubbed with wool, is found to have a negative charge of 4× 10^-7 . the number of electrons transferred
Each electron have 1.6 ×10^-19c charge
Charge on one electron=1.6×10^-19C
totla electron containing together,4×10^-7c=4×10^-7/1.6×10^-19
=4×10^12/1.6=10^13/4=25×10^11
Hence ,25×10^11, electron,is required to have 4×10^-7c charge