Question

Two rods of lengths l
and 2l thermal
conductivities 2K and K
are connected end to
end. If cross sectional
area of two rods are
equal, then equivalent
thermal conductivity of
the system is​

Answer 1

Answer:

rectangular loop ABCD is placed near on infinite length current carrying wire. Magnetic force on the

loop is :

A

B

25A

15A

10cm

D

5cm

25cm

(source)

(1) 1.25 x 104N, Attraction

(2) 1.25 x 104N, Repulsion

(3) 12.5 x 104 N, Repulsion

(4) 12.5 x 104N Attraction