long straight wire carrie current 35 A. What B at a point 20 cm from the wire?CBSC class 12th chapt4

long straight wire carrie current 35 A. What B at a point 20 cm from the wire?CBSC class 12th chapt4

Cbsc class 12th NCERT solution Chapter 4 example no. 2 A long straight wire carries a current of 35 A. What is the magnitude of the field B at a point 20 cm from the wire?