NDA 2018 Physics question
A circular coil of radius having number of turns carries a steady current . The magnetic induction at the centre of the coil is 0·1 tesla. If the number of turns is doubled and the radius is halved, which one of the following will be the correct value for the magnetic induction at the centre of the coil?
Answer: (C)
Solution
At the centre of a circular coil . Doubling
See the full step-by-step solution
Create a free account to read the complete working, and practise questions like this in a timed test.
Create a free account