Physics Comprehension

i can't see the pic. can others?

i can see dis....

16)(C)
Consider metal to be a no. of wires,of cross-sectional area=1.
Force on each wire=Bih=Bhj [i=j*a=j*1=j]
Total force=Bhj*w*l [force on one*no. of wires]
Pressure=force/area=Bhjwl/h*w=Bjl

17)(C)Flemings left hand rule.also hint from Q 18.

18)(A)
If metal is moving inwards,the free elec are moving inwards,the current is outwards,Hence force on elec. is downwards.Current is upwards.
Note that this induced current will make the metal move in the opp. direction,reference from Q17[in accordance with lenz's law]

Me too.

wherez d pic

Hi all, get relevant and useful flash animations in physics at http://www.mksfoundation.com/flashlets.aspx
and lot of other free stuff for JEE preparation at this site.