Consider a very long wire carrying a steady current I going into the page as ind

Question

Consider a very long wire carrying a steady current I going into the page as indicated in the figure below. Three oriented loops are also shown in the figure below. When statement(s) is (are) correct? integral_A Bbar middot dlbar = mu_0I integral_A Bbar middot dlbar = -mu_0 I The magnetic field at every point around loop B is mu_0I/2piR_3 integral_A Bbar middot dlbar Greaterthan integral_B Bbar middot dlbar Greaterthan integral_C Bbar middot dlbar An external agent would do negative work when moving a positive charge around loop B in the direction of loop B. Only I and II are correct. Only II and IV are correct. Only III and V are correct. Only I, IV, and V are correct. Only II, IV and V are correct.

Explanation / Answer

Option D is correct.   We know that B.dl = u I ( so option one is correct) . Similarily 4 nd 5 are correct

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