see which one lose easier, that one will become positive, then the other material will b negative...compare between the two materials used...Originally posted by jlzk:Thanks but i dont really get it...My text book also did not mention about Perspex and Polythene..and cellulose also.. Eagle ask eu arhs...is it when like when they loses electron they become postive?Which means when rubber rub with ruler the rubber will be negative charge...or do we need see the material being used and judge from there?
Originally posted by jlzk:im my experience of chionging o level tys and past yr exam papers i dont recall having even one question on which material will become +ve and -ve. dont worry about it. i 99% will not come out. just memorise it if you want.
Guys,Can help me with this...i am kinda confuse how the concepts works..
[b]
Type of Charges produced on different materials by the process of Friction.
1.If Perspex Ruler rubbed with woollen duster.
Which of the material will be postive charge and Negative charge?
2.If Polythene strip rubbed with wollen duster.
Which of the material will be postive charge and Negative charge?
3.Cellulose acetate rubbed with woolen duster.
Which of the material will be postive charge and Negative charge?
Why arhs?Why is it so?I dont get it ...[/b]
Originally posted by unclebutcher:true... its quite dumb to set this type of qn... who bothers w which is positive or negative... if u consider frm which material lose electrons more easily den becomes chemistry qn liao, beyond level liao
im my experience of chionging o level tys and past yr exam papers i dont recall having even [b]one question on which material will become +ve and -ve. dont worry about it. i 99% will not come out. just memorise it if you want.[/b]
u can always use homework forum =DOriginally posted by jlzk:Orh..i try chiong chiong chiong thnks for ya info guys i will work on it de...cos this appear in my work book...its dam dumb nut...workbook ask textbook no answer...
o.O ok cause all the materials u listed there i blur lolOriginally posted by jlzk:heheh..Thnsk guys...Stupid workbook..i only N lvl nia bully sia...keep charge here and there...later i give their head a charge make them wake up.