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                                    The radius of a coil of wire with N turns is 0.22 m and 3.5 A current flows clockwise in the coil as shown. A very long straight wire carrying a current 54 A towards the left is located 0.05 meters from the edge of the coil. The magnetic field at the centre of the coil is zero tesla. The number of turns N in the coil are: | 
                            
                                   
Answer» The radius of a coil of wire with N turns is 0.22 m and 3.5 A current flows clockwise in the coil as shown. A very long straight wire carrying a current 54 A towards the left is located 0.05 meters from the edge of the coil. The magnetic field at the centre of the coil is zero tesla. The number of turns N in the coil are: ![]()  | 
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