This law states that there is a proportional relationship between the current I flowing through an electric wire, electrical resistance, etc. and the voltage V between its terminals. It is one of the basic laws of electromagnetism discovered by Ohm in 1826. In , when a current I flows from A to B through resistance R , a voltage V is generated between terminals AB, which is positive on the terminal A side and negative on the B side. The following relationship holds between voltage V , resistance R , and current I. (Voltage V ) = (Resistance R ) x (Current I )
[Shigeo Yamaguchi] [Reference] | | | | |©Shogakukan "> Ohm's Law (Figure A) ©Shogakukan "> Ohm's Law (composite resistance) [Figure B] Source: Shogakukan Encyclopedia Nipponica About Encyclopedia Nipponica Information | Legend |
電線、電気抵抗などを流れる電流Iとその端子間の電圧Vとの間に比例関係が成り立つという法則。オームが1826年に発見した電磁気学の基本法則の一つ。 において、電流Iが抵抗RをAからBに向かって流れると、端子AB間に電圧Vが生じ、それは端子Aの側で正、Bの側で負となる。電圧V、抵抗R、電流Iの間には次の関係が成り立つ。 (電圧V)=(抵抗R)×(電流I)
[山口重雄] [参照項目] | | | | |©Shogakukan"> オームの法則〔図A〕 ©Shogakukan"> オームの法則(合成抵抗)〔図B〕 出典 小学館 日本大百科全書(ニッポニカ)日本大百科全書(ニッポニカ)について 情報 | 凡例 |
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