Test SeriesFree PYQsExamsPricing

NEET 2006 Physics question

PhysicsMoving Charges and MagnetismNEET 2006

Two circular coil 1 and 2 are made from the same wire but the radius of the 1st coil is twice that of the 2nd coil. What potential difference in volts should be applied across them so that the magnetic field at their centres is the same-

Answer: (2)

Solution

Field at the centre of a circular coil: . Since and , we need . Both coils are made of the same wire, so resistance is proportional to length (): . Potential differences:

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

Question ID VK-089542