AP and TS EAMCET Engineering Model Paper 9

Question : 107 of 160

Marks: +1, -0

A magnetic needle of pole strength 20√3 Am is pivoted at its center. Its north pole is pulled east wards by a string. The tension in the string to produce a deflection of 30° from the magnetic meridian is__N( B‌H = 10‌−4 tesla)