Recent content by Rayanna

Thank you. I get it so we have to assume both copper wires are of same length and we have coiled them in such manner that there number of turns per unit length are same.

Thanks for the solution. But still I did not understand the point that why we should assume that number of turns per united length is same?

I am also not sure that length of solenoid is same, as it is not cleary stated in question that whether copper wires used to make coil are of same length or coils are of same length but N in first case is 3n and in second case is n.

But then I can't find the length of solenoid

Two coils are made of copper wires of same length .In the first coil number of turns is 3n and radius is r . In the second coil number of turns is n and radius is 3r the ratio of self inductances of the coil is: I know that self inductance of a solenoid is μN2A/l ; where A = area of cross...

Thank you , I think that now I got the process..

So first the bacteria will take up the plasmd which has antibiotic gene and by using selectable marker we differentiate those bacterias who have plasmid and then in those bacteria's plasmid (which is of course the initial plasmid transferred to it) we insert our gene of interest .

Is it easy to combine our gene of interest to antibiotic resistance gene?How can we be so sure that our gene of interest is linked with the antibiotic resistance gene and in the next generation of host bacteria both of our gene of interest and antibiotic resistance gene is transferred?

Why would anyone like to intoduce a antibiotic gene in a bacteria if it will make it resistant to antibiotics which is not of any advantages to humans?