1.

7.9.1 मानक एम्पियर की परिभाषा (0 ८0810of Standard Ampere) s

Answer»

The formal definition of the ampere is that it is the constant current which, if maintained in two straight parallel conductors of infinite length, of negligible circular cross-section, and placed one metre apart in vacuum, would produce between those conductors a force equal to 2 x 10-7newtons per metre of length.

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