The energy stored in magnetic field produced by a metal sphere is 4.5J. If the sphere contains 4μC charge, its radius will be : [Take : 14πϵ0=9×109N−m2/C2 ]
A
32mm
No worries! We‘ve got your back. Try BYJU‘S free classes today!
B
16mm
No worries! We‘ve got your back. Try BYJU‘S free classes today!
C
20mm
Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses
D
28mm
No worries! We‘ve got your back. Try BYJU‘S free classes today!
Open in App
Solution
The correct option is D20mm Energy stored by charged metal sphere