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An element of 0.05 m is placed at the origin as shown in figure which carries a large current of 10A. distance of 1m in perpendicular direction. The value of magnetic field is 
  • a)
    4.5 × 10−8T
  • b)
    5.5 ×  10−8T
  • c)
    5.0 × 10−8T
  • d)
    7.5 ×  10−8T
Correct answer is option 'C'. Can you explain this answer?
Most Upvoted Answer
An element of 0.05 m is placed at the origin as shown in figure which ...
The magnetic field due to a current element can be calculated using the Biot-Savart law.
The Biot-Savart law states that the magnetic field (dB) at a point due to a current element (Idl) is given by:
dB = (μ₀/4π) * (Idl × r̂) / r²
Where:
  • μ₀ = 4π × 10⁻⁷ Tm/A (permeability of free space)
  • I = current (in Amperes)
  • dl = length of the current element (in meters)
  • r̂ = unit vector in the direction from the current element to the point where the field is being calculated
  • r = distance from the current element to the point (in meters)
Calculation:
Given values:
I = 10 A
dl = 0.05 m
r = 1 m
Using the Biot-Savart law:
⇒ dB = (μ₀/4π) * (I * dl × r̂) / r²
Since the angle between dl and r̂ is 90 degrees:
⇒ dB = (4π × 10⁻⁷ / 4π) * (10 * 0.05) / 1²
⇒ dB = 10⁻⁷ * 0.5
⇒ dB = 5 × 10⁻⁸ T
∴ The value of the magnetic field is 5.0 × 10⁻⁸ T.
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An element of 0.05 m is placed at the origin as shown in figure which carries a large current of 10A. distance of 1m in perpendicular direction. The value of magnetic field isa)4.5 × 10−8Tb)5.5 ×10−8Tc)5.0 ×10−8Td)7.5 ×10−8TCorrect answer is option 'C'. Can you explain this answer? for NEET 2026 is part of NEET preparation. The Question and answers have been prepared according to the NEET exam syllabus. Information about An element of 0.05 m is placed at the origin as shown in figure which carries a large current of 10A. distance of 1m in perpendicular direction. The value of magnetic field isa)4.5 × 10−8Tb)5.5 ×10−8Tc)5.0 ×10−8Td)7.5 ×10−8TCorrect answer is option 'C'. Can you explain this answer? covers all topics & solutions for NEET 2026 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for An element of 0.05 m is placed at the origin as shown in figure which carries a large current of 10A. distance of 1m in perpendicular direction. The value of magnetic field isa)4.5 × 10−8Tb)5.5 ×10−8Tc)5.0 ×10−8Td)7.5 ×10−8TCorrect answer is option 'C'. Can you explain this answer?.
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