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An iron ring having 500 turns of wire and mean diameter of 12 cm carries a current of 0.3 A. The relative permeability of iron is 600. What is the magnetic flux density in the core ? What is the magnetisation field intensity ? What part of the density is due to the electronic loop currents in the core ?

Read the given information and decide the appropriate course of action. NEET examination has laid the following conditions to qualify for appearance in the NEET Exam. 1. Candidate should pass Grade 12 with a minimum of 50% marks in Biology, Physics and Chemistry group. 2. Candidate should have completed 17 years as on 31-03-2018. 3. Candidate should have opted for Biology, Physics and Chemistry in Grade 12. Candidate 1: Ram’s date of birth is 14-05-2001, with 40% marks in Mathematics, Physics, Chemistry and Biology. Candidate 2: Sham’s date of birth is 16-08-2000, with 60% marks in Biology, Physics and Chemistry. Who is eligible to write the NEET Exam?

A sample (5.6g) containing iron is completely dissolved in cold dilute HCl to prepare a 250ml of solution. Titration of 25.0ml of this solution requires 12.5ml of 0.03M KMnO_4 solution to reac the end point. Number of moles of Fe^(2+) present in 250ml solution is Xxx10^(-2) (consider complete dissolution of FeCl_2 ). The amont of iron present in the sample is y% by weight Assume: KMnO_4 reacts with Fe^(2+) in the solution Use: Molear mass of iron as 56 gmol^(-1) The value of X is------.