MHT CET 2026 Physics question
Not in JEE Advanced syllabus
The region inside a current carrying toroid is filled with a material (Niobium) having susceptibility . The percentage increase in the magnetic field in the presence of Niobium over that without it, is
Answer: (C)
Solution
With a material core the field in the toroid is , while without the material it is . Fractional increase . As a percentage:
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