Study the V-I graph for four conductors A, B,C and D having resistance RA, RB, RC and RD respectively, and answer the following questions :

a) Which one of these is a best conductor?

b) If all the conductors are of same length and same material, which is the thickest?

c) If all the conductors are of same thickness and of same material which is the longest?

d) If the dimensions of all the conductors are identical, but their materials are different

which one would you use as

i) Resistance wire ii) connecting wire

e) Which one of the following relations is true for these conductors?

Distinguish between a transverse wave and a longitudinal wave.

Certain bacteria (such as aquaspirillum magnetotacticum) tend to swim toward the earth’s geographic north pole because they contain tiny particles, called magnetosomes, that are sensitive to a magnetic field. if a transmission line carrying 100 a is laid underwater, at what range of distances would the magnetic field from this line be great enough to interfere with the migration of these bacteria? (assume that a field less than 5% of the earth’s field would have little effect on the bacteria. take the earth’s field to be 5.0 * 10-5 t, and ignore the effects of the seawater.)

Why is a noble gas different from other elements