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Magnetic Effect of Current — Physics STD 12 Science — Question

Gujarat BoardEnglish MediumSTD 12 SciencePhysicsMagnetic Effect of Current1 Mark
MCQ
A circular coil ‘A’ has a radius R and the current flowing through it is I. Another circular coil ‘B’ has a radius 2R and if 2I is the current flowing through it, then the magnetic fields at the centre of the circular coil are in the ratio of (i.e. $B_A$ to $B_B$ )
  • A
    4 : 1
  • B
    2 : 1
  • C
    3 : 1
  • ✓
    1 : 1
✓

Answer

Correct option: D.
1 : 1
(d) 1 : 1

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