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Standard X

Physics

Magnetic Force on Current Carrying Wire

A wire along ...

Question

A wire along the x-axis carries a current of 3.50 A in the negative direction. The force (expressed in terms of unit vectors) on a 1.00 cm section of the wire exerted by the given magnetic field is ( $\to B = + (0.56 T)^k$ )

0.02 N^j

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0.04 N^j

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- 0.02 N^j

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- 0.04 N^j

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Solution

The correct option is A $0.02 N^j$
Current flowing in the wire= $\to I = - 3.5 A^i$
Length of the wire= $l = 0.01 m$
Magnetic field= $\to B = + 0.56^k$
Hence the force acting on the wire= $l (\to I \times \to B)$
$= 0.02 N^j$

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A wire along the x-axis carries a current of 3.50 A in the negative direction. The force (expressed in terms of unit vectors) on a 1.00 cm section of the wire exerted by the given magnetic field is (→B=+(0.56T)^k)

The correct option is A 0.02N^jCurrent flowing in the wire=→I=−3.5A^iLength of the wire=l=0.01mMagnetic field=→B=+0.56^kHence the force acting on the wire=l(→I×→B) =0.02N^j

A wire along the x-axis carries a current of 3.50 A in the negative direction. The force (expressed in terms of unit vectors) on a 1.00 cm section of the wire exerted by the given magnetic field is ( $\to B = + (0.56 T)^k$ )

The correct option is A $0.02 N^j$
Current flowing in the wire= $\to I = - 3.5 A^i$
Length of the wire= $l = 0.01 m$
Magnetic field= $\to B = + 0.56^k$
Hence the force acting on the wire= $l (\to I \times \to B)$
$= 0.02 N^j$