# NEET MCQ on Biot Savart Law

NEET  Physics is the scoring paper in the medical entrance examination. Here, you will discover the NEET Physics MCQ Questions for all Concepts as per the latest syllabus. Practice more on a regular basis with these NEET Physics objective questions on air pollution and improve your subject knowledge & problem-solving skills along with time management. NEET Physics Biot Savart Law Multiple Choice Questions make you feel confident in answering the question in the exam & increases your scores to high.

## MCQ on Biot Savart Law

1. Which is the equation of the magnetic field according to Biot-Savart’s law?
(a) IdIsinθ/r2
(b) (μ0/4π)IdIsinθ/r
(c) (μ0/4π)IdIsinθ/r2
(d) (μ0/4π)IdIsinθ

2. The magnetic field due to a copper rod carrying direct current is
(a) The magnetic field is inside the rod
(b) The magnetic field is outside the rod
(c) Both inside and outside the rod
(d) Neither inside nor outside

Answer: (c) Both inside and outside the rod

3. Consider a current i flowing through the inner conductor of a coaxial cable and the current returns along the outer conductor of the cable. The value of magnetic induction at a distance r from the axis is
(a) (μ0/4π)(2i/r)
(b) ∞
(c) Zero
(d) (μ0/4π)(2πi/r)

4. To which law of electricity is Biot Savart law of magnetism analogous to
(a) Coulomb’s law
(b) Ohm’s law
(c) Kirchoff’s law

5. Which of the following properties cannot be calculated from Biot Savart law?
(a) Magnetic field intensity
(b) Flux density
(c) Permeability
(d) Electric field intensity

6. Consider a circular conductor with 2m radius and 8 A current flowing through it. What is the value of magnetic field intensity at the centre of the circular conductor?
(a) 4π x 10-7 T
(b) 8π x 10-7 T
(c) 8 x 10-7 T
(d) 3π x 107 T

Answer: (b) 8π x 10-7 T

7. If the strength of the magnetic field at a point r near a long straight current-carrying wire is B. The value of the field at a distance r/2 will be
(a) B/2
(b) B/4
(c) 2B
(d) 4B

8. If the current I flows through the coil of radius r then the field at the centre of the circular coil is
(a) Inversely proportional to I2
(b) Directly proportional to I
(c) Directly proportional to r
(d) Inversely proportional to r2

Answer: (b) Directly proportional to I

9. Two parallel conductors separated by a distance 2r carries current i in the same direction. The intensity of the magnetic field midway between them is
(a) Zero
(b) μ0 i/r
(c) 4μ0 i/r
(d) μ0 i/4r