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NEET
Exam
NEET
Subject
Physics
Chapter
Magnetic Effects of Current

NEET · Physics · Magnetic Effects of Current

Figure A and B shown two long straight wires of circular...

Figure AA and BB shown two long straight wires of circular cross-section ( aa and bb with a<ba < b ), carrying current II which is uniformly distributed across the cross-section. The magnitude of magnetic field BB varies with radius rr and can be represented as:

Figure A and B shown two long straight wires of circular cross-section ( a and b with a

Options

  1. AThe hysteresis loop of a magnetic material has intercepts on the B -axis at ± 0.4 T and intercepts on the H -axis at ±
  2. BThe hysteresis loop of a magnetic material has intercepts on the B -axis at ± 0.4 T and intercepts on the H -axis at ±
  3. CThe hysteresis loop of a magnetic material has intercepts on the B -axis at ± 0.4 T and intercepts on the H -axis at ±
  4. DThe hysteresis loop of a magnetic material has intercepts on the B -axis at ± 0.4 T and intercepts on the H -axis at ±

Correct answer

C. The hysteresis loop of a magnetic material has intercepts on the B -axis at ± 0.4 T and intercepts on the H -axis at ±

Step-by-step solution

Graph for wire of radius RR:

Figure A and B shown two long straight wires of circular cross-section ( a and b with a

As b>ab > a

Ba>Bb{B}_{a} > {B}_{b}

Ba=μ0i2\pia{B}_{a} = \dfrac{{\mu}_{0}i}{2\pia}

Bb=μ0i2\pib{B}_{b} = \dfrac{{\mu}_{0}i}{2\pib}

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