A short magnet has a magnetic moment of 20 Am. If its magnetic length is 10 cm, then its pole strength is______
A. 100 Am
B. 200 Am
C. 50 Am
D. 400 Am
Answer:B
A short magnet has a magnetic moment of 20 Am. If its magnetic length is 10 cm, then its pole strength is______
A. 100 Am B. 200 Am C. 50 Am D. 400 Am