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AP EAMCET · PHYSICS · Magnetic Effects of Current

A long straight wire carrying electric current 'i 'is bent at its mid point to form an angle of 45° as shown in the figure. Magnetic field at a point P at a distance d from the point Q of bending is

  1. A μ0i4πd2-1
  2. B μ0i2πd2-1
  3. C μ0i4πd
  4. D μ0i2πd
Verified Solution

Answer & Solution

Correct Answer

(A) μ0i4πd2-1

Step-by-step Solution

Detailed explanation

Recall the formula of the magnetic field due to finite straight wire, B=μ0i4πrsinϕ1+sinϕ2 here r=dcos45°, ϕ1=90° & ϕ1=-45°…