KEAM 2018 Physics and Chemistry Paper

© examsiri.com

Question : 70 of 120

Marks: +1, -0

The magnitude of a magnetic field at the centre of a circular coil of radius R, having N turnsand carrying a current I can be doubled by changing

I to 2I and N to 2N keeping R unchanged
N to N/2 and keeping I and R unchanged
N to 2N and R to 2R keeping I unchanged
R to 2R and I to 2I keeping N unchanged
I to 2I and keeping N and R unchanged

Go to Question:

Prev Question

Next Question