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截面積一樣的單支導(dǎo)體與多支導(dǎo)體,問什么單支的電阻要小。原理是什么?多謝!
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截面積你確定是一樣的嗎?!
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是的
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舉個例子:
TD:30AWG 361 ohm/km (截面積:0.0506)
<DIV style="mso-element: frame; mso-element-frame-hspace: 9.0pt; mso-element-wrap: around; mso-element-anchor-vertical: paragraph; mso-element-anchor-horizontal: column; mso-element-top: .05pt; mso-height-rule: exactly">TS:30AWG 381 ohm/km (截面積:0.0549)</DIV><DIV style="mso-element: frame; mso-element-frame-hspace: 9.0pt; mso-element-wrap: around; mso-element-anchor-vertical: paragraph; mso-element-anchor-horizontal: column; mso-element-top: .05pt; mso-height-rule: exactly"> </DIV><DIV style="mso-element: frame; mso-element-frame-hspace: 9.0pt; mso-element-wrap: around; mso-element-anchor-vertical: paragraph; mso-element-anchor-horizontal: column; mso-element-top: .05pt; mso-height-rule: exactly">多支導(dǎo)體截面積大,反而電阻更大。</DIV><DIV style="mso-element: frame; mso-element-frame-hspace: 9.0pt; mso-element-wrap: around; mso-element-anchor-vertical: paragraph; mso-element-anchor-horizontal: column; mso-element-top: .05pt; mso-height-rule: exactly"> </DIV><DIV style="mso-element: frame; mso-element-frame-hspace: 9.0pt; mso-element-wrap: around; mso-element-anchor-vertical: paragraph; mso-element-anchor-horizontal: column; mso-element-top: .05pt; mso-height-rule: exactly">多謝!</DIV>6
30AWG 361 ohm/km (截面積:0.0506)
TS:30AWG 381 ohm/km (截面積:0.0549)
多支導(dǎo)體截面積大,反而電阻更大
多謝!
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問一下二樓大仙,這個接觸電阻是什么東西,它是怎么產(chǎn)生的?
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頂一頂
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還請各位大佬幫忙解疑
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