قانون اُهم که به نام کاشف آن جرج اهم نام گذاری شدهاست، بیان میدارد که نسبت اختلاف پتانسیل (یا افت ولتاژ) بین دو سر یک هادی (و مقاومت) به جریان عبور کننده از آن به شرطی که دما ثابت بماند، مقدار ثابتی است:
If the article was previously ویکیپدیا:گزیدن مقالههای برگزیده for featured status, or if it has been on peer review, try to resolve as many of the remaining objections as possible.
In the nominations section below, add a third level section header with the linked page title as the section name (===[[Page title]]===). Below this new header, add your reasons for nomination and sign your nomination with ~~~~.
موافقت و مخالفت
If you approve of an article, write "Support" followed by your reasons.
A nomination is considered a vote in support, so nominators don't need to add another vote to their nominations.
If you oppose a nomination, write "Oppose" followed by the reasons for your objection. Where possible, objections should provide a specific rationale that can be addressed.
To withdraw an objection, strike it out (with <s>...</s>) rather than removing it.
