A long straight wire carrying a current of 30A is placed in an external uniform magnetic field of induction 4×10 −4 T. The magnetic field is acting parallel to the direction of the current. The magnitude of the resultant magnetic induction in tesla at a point 2.0cm away from the wire is : [μ 0 ​ =4π×10 −7 Hm −1 ] A 10 −4 B 3×10 −4 C 5×10 −4 D 6×10 −4 Medium

  _

||

 Question:  From NCERT  | CUET   || [Difficult level:Medium] Subtopic:Biot-Savart Law || 

.

A long straight wire carrying a current of 30A is placed in an external uniform magnetic field of induction 4×10−4T. The magnetic field is acting parallel to the direction of the current. The magnitude of the resultant magnetic induction in tesla at a point 2.0cm away from the wire is :
[μ0​=4π×10−7Hm−1]

A

10−4

B

3×10−4

C

5×10−4

D

6×10−4

Medium

.

 ✅ 

 Answer ▽ ✅Verified 

Ans: C 

 CUET UG  Physics Syllabus ✅ 

I 12~physics.