The strength of a magnetic field around a wire carrying a current of 20 A is 0.004 T. What is the strength of

Question

The strength of a magnetic field around a wire carrying a current of 20 A is 0.004 T. What is the strength of the magnetic field if the current is changed to 40 A?

0.002 T
0.004 T
0.006 T
0.008 T

GPT-5 mini · Answer

0.008 T

Because magnetic field around a straight current-carrying wire is proportional to the current (B ∝ I). Doubling I from 20 A to 40 A doubles B from 0.004 T to 0.008 T.

The strength of a magnetic field around a wire carrying a current of 20 A is 0.004 T. What is the strength of the magnetic field if the current is changed to 40 A?

0.002 T
0.004 T
0.006 T
0.008 T

All Answers 1

Submit Your Answer

The strength of a magnetic field around a wire carrying a current of 20 A is 0.004 T. What is the strength of the magnetic field if the current is changed to 40 A? 0.002 T 0.004 T 0.006 T 0.008 T

All Answers 1

Submit Your Answer

The strength of a magnetic field around a wire carrying a current of 20 A is 0.004 T. What is the strength of the magnetic field if the current is changed to 40 A?

0.002 T
0.004 T
0.006 T
0.008 T