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Magnetic Field Due to a Circular Ring on the Axis

A wire bent i...

Question

A wire bent in the form of right angled triangle PQR, carries a current $1 A$ . It is placed in a region of a uniform magnetic field $B = 0.2 T$ . If $P R = 1 m$ , the net force on the wire is :

1.73 N

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3.46 N

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2.732 N

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0

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Solution

The correct option is D $0$
Net force on a closed loop due to magnetic field always equals to zero.
This result is a standard one and is expected to be remembered.

Note : the magnetic field must be uniform. Only then this holds. In a non uniform field, this may not hold/

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A wire bent in the form of right angled triangle PQR, carries a current 1A. It is placed in a region of a uniform magnetic field B=0.2T. If PR=1m, the net force on the wire is :

The correct option is D 0Net force on a closed loop due to magnetic field always equals to zero.This result is a standard one and is expected to be remembered.Note : the magnetic field must be uniform. Only then this holds. In a non uniform field, this may not hold/

A wire bent in the form of right angled triangle PQR, carries a current $1 A$ . It is placed in a region of a uniform magnetic field $B = 0.2 T$ . If $P R = 1 m$ , the net force on the wire is :

The correct option is D $0$
Net force on a closed loop due to magnetic field always equals to zero.
This result is a standard one and is expected to be remembered.

Note : the magnetic field must be uniform. Only then this holds. In a non uniform field, this may not hold/