J jack10 New Member Joined Feb 28, 2013 Messages 12 Gender Undisclosed HSC N/A Aug 19, 2013 #1 hey, can someone tell me the answer for this. this is my working; F/l=kII/d F=kIIl/d F=k(2I)I(2l)/d F=4kIIl/d which is 4 times original so I put D, but the answer says C. Is it because only one wire was doubled?
hey, can someone tell me the answer for this. this is my working; F/l=kII/d F=kIIl/d F=k(2I)I(2l)/d F=4kIIl/d which is 4 times original so I put D, but the answer says C. Is it because only one wire was doubled?
A AnimeX Member Joined Aug 11, 2012 Messages 588 Gender Male HSC N/A Aug 19, 2013 #2 jack10 said: View attachment 28535 hey, can someone tell me the answer for this. this is my working; F/l=kII/d F=kIIl/d F=k(2I)I(2l)/d F=4kIIl/d which is 4 times original so I put D, but the answer says C. Is it because only one wire was doubled? Click to expand... Yep, the F/l I think the l refers to the shared length (which is still 1l, not 2l since only one wire is doubled).
jack10 said: View attachment 28535 hey, can someone tell me the answer for this. this is my working; F/l=kII/d F=kIIl/d F=k(2I)I(2l)/d F=4kIIl/d which is 4 times original so I put D, but the answer says C. Is it because only one wire was doubled? Click to expand... Yep, the F/l I think the l refers to the shared length (which is still 1l, not 2l since only one wire is doubled).
J jack10 New Member Joined Feb 28, 2013 Messages 12 Gender Undisclosed HSC N/A Aug 19, 2013 #3 alright, cool thanks.
