2. DC current standards
2.1 Practical applications of the ampere
Like the volt, the ampere is now realized in the SI indirectly, through the joint realization of the watt and the ohm. The ampere can also be realized directly from current scales, of which the watt scale is a modern emanation. They are based on the principle of the electrodynamometer. Consider two concentric solenoidal coils of axis z, one fixed, the other movable along the axis and suspended from the arm of a balance, and let I ...
Exclusive to subscribers. 97% yet to be discovered!
Already subscribed? Log in!
DC current standards
Article included in this offer
"Electronic measurements and tests"
(
79 articles
)
Updated and enriched with articles validated by our scientific committees
A set of exclusive tools to complement the resources
Bibliography
Teaching aids
Exclusive to subscribers. 97% yet to be discovered!
Already subscribed? Log in!
