A long straight wire carries a current o | Class 12 Physics Chapter Moving Charges and Magnetism, Moving Charges and Magnetism NCERT Solutions

Question:

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?

Answer:

Current in the wire, I = 35 A

Distance of a point from the wire, r = 20 cm = 0.2 m

Magnitude of the magnetic field at this point is given as:

B

Where,

μ0= Permeability of free space = 4π × 10–7 T m A–1

Hence, the magnitude of the magnetic field at a point 20 cm from the wire is 3.5 × 10–5 T.


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Comments

  • Kamdev kumar
  • 2022-08-15 14:48:57

Sir main class 12th student hun es lie main aap se class karna chahta hun


  • SANTU KUMAR
  • 2018-07-22 12:38:10

3.5×10a^€"5T What is means a^€"5


Comment(s) on this Question

Welcome to the NCERT Solutions for Class 12 Physics - Chapter . This page offers a step-by-step solution to the specific question from Excercise 1 , Question 2: A long straight wire carries a current of 35 A. What is the magnitude of the field B at a point 20 c....