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Magnetics question

2002 · Shift 0 · Q126
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Magnetics question

2002 · Shift 0 · Q126

JEE MainPhysicsMagneticsMCQ+4 / −1
Wires 111 and 222 carrying currents i1i{}_1i1​ and i2i{}_2i2​ respectively are inclined at an angle θ\thetaθ to each other. What is the force on a small element dldldl of wire 222 at a distance of rrr from wire 111(as shown in figure) due to the magnetic field of wire 111? AIEEE 2002 Physics - Magnetic Effect of Current Question 196 English
  1. A
    μ02πri1i2 dl tan⁡ θ{{{\mu _0}} \over {2\pi r}}{i_1}{i_2}\,dl\,\tan \,\theta2πrμ0​​i1​i2​dltanθ
  2. B
    μ02πri1i2 dl sin⁡ θ{{{\mu _0}} \over {2\pi r}}{i_1}{i_2}\,dl\,\sin \,\theta2πrμ0​​i1​i2​dlsinθ
  3. C
    μ02πri1i2 dl cos⁡ θ{{{\mu _0}} \over {2\pi r}}{i_1}{i_2}\,dl\,\cos \,\theta2πrμ0​​i1​i2​dlcosθ
  4. D
    μ04πri1i2 dl sin⁡ θ{{{\mu _0}} \over {4\pi r}}{i_1}{i_2}\,dl\,\sin \,\theta4πrμ0​​i1​i2​dlsinθ
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