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1. |
The force per meter on two wires carrying a current of 1 A placed 1 m apart is equal to |
A. | 9.0 * 109 N |
B. | 6.7 * 10-11 N |
C. | 3.0 * 10-4 N |
D. | 2.0 * 10-7 N |
Answer» E. | |