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JEE Advanced Model Paper 4 with solutions for online practice

Paragraph For Questions 15 and 16

The circuit in figure consists of wires at the top and bottom and identical metal springs as the left and right sides. The wire at the bottom has a mass of 10.0g and is 5.00 cm long. The wire is hanging as shown in the figure. The springs stretch 0.500cm under the weight of the wire, and the circuit has a total resistance of 12.0Ω. When a magnetic field is turned on, the springs stretch an additional 0.300 cm.

Question : 15

Total: 54

From the above statements we can conclude that

the magnetic field is directed into the plane of page
the magnetic field is directed out of the page
the magnetic field is toward left in the plane of page
the magnetic field is toward right in the plane of page

Validate

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