电路上的a和ma是什么单位 在电的单位表示中，A是什么的单位
\u8bf7\u95ee\u7535\u8def\u4e2dV\u662f\u4ec0\u4e48\u5355\u4f4d\uff1f\u610f\u601d\uff1fMA\uff0c\u4e00\u5b89\u57f9=\uff1fV\u7535\u538b\uff1a\u53c8\u79f0\u4e3a\u7535\u4f4d\u5dee\u662f\u7535\u573a\u529b\u505a\u529f\u5f62\u6210\u7535\u538b\uff0c\u7535\u538b\u5355\u4f4d\u662f\uff1a\u4f0f\u7279\u7528\u5b57\u6bcdV\u6765\u8868\u793a\u3002
\u7535\u538b\u5355\u4f4d\u6362\u7b97\uff1a 1V=1000mV 1mV=1000\u03bcV V\u4f0f\u7279 mV\u6beb\u4f0f \u03bcV\u5fae\u4f0f
\u7535\u6d41\uff1a\u6b63\u7535\u8377\u5b9a\u5411\u79fb\u52a8\u5f62\u6210\u7535\u6d41\uff0c\u7535\u6d41\u5355\u4f4d\u662f\uff1a\u5b89\u57f9\u7528\u5b57\u6bcdA\u6765\u8868\u793a\u3002
\u7535\u6d41\u5355\u4f4d\u6362\u7b97\uff1a1A=1000mA 1mA=1000\u03bcA A\u5b89\u57f9 mA\u6beb\u5b89 \u03bcA\u5fae\u5b89
V\uff08\u4f0f\u7279\uff09\uff1emV\uff08\u6beb\u4f0f\uff09\uff1e\u03bcV\uff08\u5fae\u4f0f\uff09
A\uff08\u5b89\u57f9\uff09\uff1emA\uff08\u6beb\u5b89\uff09\uff1e\u03bcA\uff08\u5fae\u5b89\uff09
\u7535\u538b\u662f\u5f62\u6210\u7535\u6d41\u7684\u4e3b\u8981\u539f\u56e0\uff0c\u9996\u5148\u7535\u6e90\u5fc5\u987b\u6709\u7535\u4f4d\u5dee\uff0c\u4e24\u70b9\u95f4\u7535\u4f4d\u7684\u5dee\u5c31\u662f\u8fd9\u4e24\u70b9\u95f4\u7684\u7535\u538b\uff0c\uff08\u6240\u4ee5\u7535\u4f4d\u5dee\u5c31\u662f\u7535\u538b\uff09\uff0c\u7535\u4f4d\u5dee\u63a8\u52a8\u6b63\u7535\u8377\u4ece\u7535\u6e90\u6b63\u6781\u7ecf\u8fc7\u4e00\u4e9b\u8d1f\u8f7d\u6d41\u5411\u7535\u6e90\u8d1f\u6781\u5c31\u5f62\u6210\u4e86\u7535\u6d41\u3002
\u5f62\u6210\u7535\u6d41\u6709\u4e24\u4e2a\u6761\u4ef6\uff1a 1\uff1a\u5fc5\u987b\u6709\u7535\u6e90\u7535\u538b\uff0c2\uff1a\u5fc5\u987b\u662f\u4e00\u6761\u95ed\u5408\u7684\u7535\u6d41\u56de\u8def\u3002
\u6240\u4ee5\u8bf4\u603b\u7ed3\u4e00\u53e5\u8bdd\uff0c\u6709\u7535\u538b\u4e0d\u4e00\u5b9a\u6709\u7535\u6d41\u4f46\u6709\u7535\u6d41\u4e00\u5b9a\u662f\u6709\u7535\u538b\u7684\uff0c\u56e0\u4e3a\u5728\u4e00\u6761\u95ed\u5408\u56de\u8def\u4e2d\u80af\u5b9a\u6709\u7535\u6e90\u7535\u538b\u7535\u8def\u4e2d\u4e5f\u80af\u5b9a\u6709\u7535\u6d41\uff0c\u4f46\u662f\u5982\u679c\u5728\u4e00\u6761\u65ad\u5f00\u7684\u7535\u8def\u4e2d\uff0c\u80af\u5b9a\u6709\u7535\u6e90\u7535\u538b\u7684\uff0c\u4f46\u662f\u7535\u8def\u4e2d\u7684\u7535\u6d41\u662f\u4e3a0\uff0c\u56e0\u4e3a\u8fd9\u6761\u7535\u8def\u662f\u65ad\u8def\uff0c\u4e0d\u662f\u4e00\u6761\u95ed\u5408\u7684\u56de\u8def\uff0c\u7535\u4f4d\u5dee\u4e0d\u4f1a\u63a8\u52a8\u7535\u8377\u505a\u5b9a\u5411\u79fb\u52a8\u3002\u6240\u4ee5\u5c31\u6ca1\u6709\u7535\u6d41
A\u662f\u7535\u6d41\u5355\u4f4d"\u5b89\u57f9"\uff0c\u6307\u7535\u7ebf\u80fd\u591f\u627f\u8f7d\u7684\u989d\u5b9a\u7535\u6d41\u3002
\u5b89\u57f9\uff08ampere\uff09\u662f\u56fd\u9645\u5355\u4f4d\u5236\u4e2d\u8868\u793a\u7535\u6d41\u7684\u57fa\u672c\u5355\u4f4d\uff0c\u7b80\u79f0\u5b89\u3002\u7b26\u53f7A\u3002\u4e3a\u7eaa\u5ff5\u6cd5\u56fd\u7269\u7406\u5b66\u5bb6A.\u5b89\u57f9\u800c\u547d\u540d\uff0c\u4ed6\u57281820\u5e74\u63d0\u51fa\u4e86\u8457\u540d\u7684\u5b89\u57f9\u5b9a\u5f8b\u3002
1\u5b89\u57f9\u76f8\u5f53\u4e8e\u5728\u7535\u8def\u4e2d\u6d41\u52a8\u7684\u6bcf\u79d2\u4e00\u5e93\u4ed1\u7684\u7535\u8377\u3002\u867d\u7136\u8fd9\u662f\u5b89\u57f9\u7684\u5b9e\u9645\u5b9e\u73b0\uff0c\u4f46\u6b63\u5f0f\u5b9a\u4e49\u5c06\u7535\u6d41\u6c34\u5e73\u4e0e\u57fa\u672cSI\u53c2\u6570\u8054\u7cfb\u8d77\u6765\u3002
\u5b89\u57f9\u5b9a\u4e49\uff1a\u5b89\u57f9\u7684\u6b63\u5f0f\u5b9a\u4e49\u662f\uff1a\u5982\u679c\u4fdd\u6301\u5728\u65e0\u9650\u957f\u5ea6\u7684\u4e24\u4e2a\u76f4\u7684\u5e73\u884c\u5bfc\u4f53\u4e2d\u7684\u6052\u5b9a\u7535\u6d41\uff0c\u8be5\u5e73\u884c\u5bfc\u4f53\u5177\u6709\u53ef\u5ffd\u7565\u7684\u5706\u5f62\u6a2a\u622a\u9762\uff0c\u5e76\u4e14\u5728\u771f\u7a7a\u4e2d\u653e\u7f6e\u4e00\u7c73\uff0c\u5c06\u5728\u6bcf\u7c73\u957f\u5ea6\u8fd9\u4e9b\u5bfc\u4f53\u4e4b\u95f4\u4ea7\u751f\u7b49\u4e8e2\u00d710^(-7)\u725b\u987f\uff08newton\uff09\u7684\u529b\u3002
\u6269\u5c55\u8d44\u6599
\u5b89\u57f9\u8fd9\u4e00\u5355\u4f4d\u4e0e\u74e6\u7279\u5e73\u8861\u548c\u6b27\u59c6\u5b9a\u5f8b\u4e2d\u7684\u5355\u4f4d\u4f0f\u7279\u3001\u6b27\u59c6\u76f8\u8054\u7cfb\u3002\u800c\u5728\u7ea6\u745f\u592b\u68ee\u6548\u5e94\u548c\u91cf\u5b50\u970d\u5c14\u6548\u5e94\u4e2d\u4e5f\u90fd\u5404\u81ea\u6709\u6240\u5e94\u7528\u3002\u5efa\u7acb\u4e00\u5b89\u57f9\u7684\u6280\u672f\u5df2\u7ecf\u80fd\u591f\u8fbe\u523010\u7684\u903c\u8fd1\u8bef\u5dee\u3002
\u968f\u7740\u4e0a\u8ff0\u5b89\u57f9\u5b9a\u4e49\u7684\u95ee\u4e16\uff0c\u6d4b\u91cf\u79d1\u5b66\u518d\u6b21\u52a0\u901f\u53d1\u5c55\u3002\u7cbe\u51c6\u5730\u5b9a\u4e49\u5b89\u57f9\uff0c\u610f\u5473\u7740\u8ba1\u91cf\u5b66\u5bb6\u4eec\u80fd\u591f\u89c2\u5bdf\u5206\u6790\u4e0d\u540c\u7684\u7269\u7406\u73b0\u8c61\uff0c\u5e76\u5229\u7528\u8fd9\u4e9b\u73b0\u8c61\u5236\u9020\u65e5\u76ca\u51c6\u786e\u7684\u6d4b\u91cf\u4eea\u5668\u3002\u4f8b\u5982\uff0c\u91cf\u5b50\u7269\u7406\u5df2\u4e3a\u5e94\u5bf9\u6d4b\u91cf\u6311\u6218\u63d0\u4f9b\u4e86\u5f88\u591a\u65b0\u578b\u72ec\u7279\u7684\u89e3\u51b3\u65b9\u6848\u3002
\u4f46\u662f\uff0c\u73b0\u5728SI\u57fa\u672c\u5355\u4f4d\u5b89\u57f9\u7684\u5b9e\u9645\u590d\u73b0\u65b9\u6cd5\u8fdc\u4e0d\u540c\u4e8e\u5176\u5b98\u65b9\u5b9a\u4e49\u3002\u5b89\u57f9\u7684\u5b9e\u9645\u590d\u73b0\u65b9\u6cd5\u662f\u57fa\u4e8e\u7535\u6d41\u4e0e\u7535\u538b\u548c\u7535\u963b\u4e4b\u95f4\u7684\u5173\u7cfb\uff0c\u7528\u4e00\u79cd\u79f0\u4f5c\u201c\u7ea6\u745f\u592b\u68ee\u7ed3\u201d\u7684\u88c5\u7f6e\u4ea7\u751f\u7535\u538b\uff0c\u7528\u201c\u91cf\u5b50\u5316\u970d\u5c14\u6548\u5e94\u201d\u4ea7\u751f\u7535\u963b\u3002
\u4ea7\u751f\u7535\u538b\u548c\u7535\u963b\u7684\u8fd9\u4e24\u79cd\u65b9\u6cd5\u5747\u8fd0\u7528\u4e86\u5df2\u88ab\u4eba\u4eec\u5145\u5206\u8ba4\u8bc6\u7684\u7269\u7406\u73b0\u8c61\uff0c\u5b83\u4eec\u5206\u522b\u57fa\u4e8e\u7ea6\u745f\u592b\u68ee\u5e38\u6570\u548c\u51af\u514b\u91cc\u9752\u5e38\u6570\u8fd9\u4e24\u4e2a\u7269\u7406\u5e38\u6570\uff08\u7ea6\u745f\u592b\u68ee\u548c\u51af\u514b\u91cc\u9752\u90fd\u662f\u8bfa\u8d1d\u5c14\u5956\u83b7\u5f97\u8005\uff09\uff0c\u5e76\u4e14\u90fd\u53ef\u4ee5\u7528\u81ea\u7136\u754c\u7684\u57fa\u672c\u5e38\u6570\uff1a\u57fa\u672c\u7535\u8377e\u548c\u666e\u6717\u514b\u5e38\u6570h\u6765\u8868\u793a\u3002
\u53c2\u8003\u8d44\u6599\u6765\u6e90\uff1a\u767e\u5ea6\u767e\u79d1-\u5b89\u57f9
a叫“安”，ma叫“毫安”。1安等于1000毫安。
绛旓細鐢佃矾涓婄殑a鍜宮a鏄數娴佺殑鍗曚綅銆a鍙滃畨鈥濓紝ma鍙滄瀹夆銆1瀹夌瓑浜1000姣畨銆
绛旓細mA鍜孉閮芥槸鐢垫祦鍗曚綅锛1A=1000MA銆0.2A=200mA锛屽彟涓涓槸150mA銆1mA绛変簬0.001A锛1A=1000mA 0.2A鐨勫厖鐢甸熷害浼氭瘮150mA鐨勮蹇鐢垫祦璁＄畻 姣畨锛屾槸鐢垫祦鐨勮閲忓崟浣锛岀敤瀛楁瘝mA琛ㄧず銆傛瀹夋槸涓瀹夊煿鐨勫崈鍒嗕箣涓銆傚叾涓畨鏄浗闄呯殑缁熶竴鐢垫祦鍗曚綅锛岀敤瀛楁瘝A琛ㄧず銆傜數娴佸湪鐗╃悊琛ㄧず锛岀敤鑻辨枃澶у啓鐨処琛ㄧず銆傜數娴佽〃杈惧紡I=...
绛旓細鍦ㄧ數璺浘涓細A浠ｈ〃鐢垫祦琛紙鐢垫祦鍥介檯鍗曚綅瀹夊煿棣栧瓧姣锛岀數娴佽〃涔熷彨瀹夊煿琛級mA浠ｈ〃姣畨琛紙閲忕▼杈冨皬锛屼絾绮剧‘锛夎繖涓や釜绗﹀彿閮芥槸娴嬬數娴佺殑浠〃锛屽湪鍒嗘瀽鐢佃矾鏃讹紝鍥犵數闃绘瀬灏忥紝閫氬父褰撳仛瀵肩嚎锛屼笉鑰冭檻鍏剁數闃伙紙濂ヨ禌棰樻湁鏃惰鑰冭檻锛夛紝涓茶仈鍦ㄧ數璺腑浣跨敤 鍙傝冭祫鏂欙細鍖楀笀澶х増鐗╃悊涔︿節骞寸骇锛堝叏涓鍐岋級鈥滅畝鍗曠數璺濅竴绔 ...
绛旓細瀹(A)鍜屾瀹(mA)閮芥槸鐢垫祦鐨勫害閲忓崟浣銆傝1姣畨=0.001瀹夛紝閭ｄ箞1瀹=1000姣畨銆傚畨鍩(A)鏄浗闄呭崟浣嶅埗涓數娴佺殑鍗曚綅锛屼竴鑸瀹1瀹(A)琛ㄧず1绉掑唴閫氳繃瀵间綋妯埅闈㈢殑鐢佃嵎閲忎负1搴撲粦銆傚嵆锛1瀹夊煿=1搴撲粦/绉掋傜浉鍏冲唴瀹癸細瀹夊煿鏈鍒濇槸琚畾涔変负鍘樼背-鍏-绉掑埗涓數娴佸崟浣嶇粷瀵瑰畨鍩圭殑鍗佸垎涔嬩竴锛屽姝ょ‘瀹氬畠鐨勫ぇ灏忔槸涓轰簡...
绛旓細1A锛堝畨锛=1000mA锛堟瀹夛級mA鏄瀹夌殑鎰忔濓紝姣畨鏄竴瀹夊煿鐨勫崈鍒嗕箣涓銆侫鏄畨鍩圭殑鎰忔锛屽畨鍩癸紙ampere锛夋槸鍥介檯鍗曚綅鍒朵腑琛ㄧず鐢垫祦鐨勫熀鏈崟浣嶏紝绠绉板畨銆
绛旓細1銆姣畨锛屾槸鐢垫祦鐨勮閲忓崟浣嶏紝鐢ㄥ瓧姣峬A琛ㄧず銆傛瀹夋槸1瀹夊煿鐨勫崈鍒嗕箣涓銆傚畨鍩癸紙绠绉帮細瀹夛級鏄浗闄呯殑缁熶竴鐢垫祦鍗曚綅锛岀敤瀛楁瘝A琛ㄧず銆傜數娴佸湪鐗╃悊鐢ㄨ嫳鏂囧ぇ鍐欑殑I琛ㄧず銆2銆佺數娴佹槸鎸囦竴缇ょ數鑽风殑娴佸姩銆傜數娴佺殑澶у皬绉颁负鐢垫祦寮哄害锛屾槸鎸囧崟浣嶆椂闂村唴閫氳繃瀵肩嚎鏌愪竴鎴潰鐨勭數鑽烽噺锛岃〃杈惧紡I=q/t锛屾瘡绉掗氳繃涓搴撲粦鐨勭數閲忕О涓轰竴鈥...
绛旓細1A(瀹)=1000mA(姣畨)=1000000渭A
绛旓細鐢垫祦鍗曚綅鎹㈢畻濡備笅锛氱數娴佸崟浣嶏細鍗冨畨锛坘A锛夈瀹夊煿锛圓锛夈姣畨锛坢A锛夈佸井瀹夛紙渭A锛夛紝鎹㈢畻濡備笅锛 1kA=1000A銆1A=1000mA銆1mA=1000渭A銆傚湪鐢靛涓數鑽风殑瀹氬悜绉诲姩灏辨槸鎸囩數娴併傜數娴佹柟鍚戞槸浠庣數婧愮殑姝ｆ瀬鍒拌礋鏋佷篃灏辨槸姝ｇ數瀛愮殑娴佸姩鏂瑰悜锛屼腑闂村彲缁忚繃鑻ュ共鐨勭數璺傜數娴佸崟浣嶆槸瀹夊煿绠銆傜畝绉扳滃畨鈥濓紝绗﹀彿 鈥淎鈥濓紝涔...
绛旓細鐢垫祦鐨勫崟浣嶆湁瀹夊煿锛圓锛夈姣畨锛坢A锛夈佸井瀹夛紙渭A锛夈傜數娴佸崟浣嶆崲绠 1kA=1000A銆1A=1000mA銆1mA=1000渭A銆傚湪鐢靛涓數鑽风殑瀹氬悜绉诲姩灏辨槸鎸囩數娴併傜數娴佹柟鍚戞槸浠庣數婧愮殑姝ｆ瀬鍒拌礋鏋佷篃灏辨槸姝ｇ數瀛愮殑娴佸姩鏂瑰悜锛屼腑闂村彲缁忚繃鑻ュ共鐨勭數璺傜數娴佸崟浣嶆槸瀹夊煿銆傜數鐨勬祦鍔 鎴戝浗鐨勭敤鐢甸鐜囦负50Hz锛堣但鍏癸級锛屼唬琛ㄤ簡姣忎竴绉掑唴锛...
绛旓細鐢垫祦鍗曚綅锛氬崈瀹夛紙kA锛夈瀹夊煿锛圓锛夈姣畨锛坢A锛夈佸井瀹夛紙渭A锛夛紝鎹㈢畻濡備笅锛1kA=1000A銆1A=1000mA銆1mA=1000渭A銆傚湪鐢靛涓數鑽风殑瀹氬悜绉诲姩灏辨槸鎸囩數娴併傜數娴佹柟鍚戞槸浠庣數婧愮殑姝ｆ瀬鍒拌礋鏋佷篃灏辨槸姝ｇ數瀛愮殑娴佸姩鏂瑰悜锛屼腑闂村彲缁忚繃鑻ュ共鐨勭數璺傜數娴佸崟浣嶆槸瀹夊煿绠绉板畨锛圓锛夛紝鏄汉浠负浜嗙邯蹇靛彂鐜扮數娴佺殑瀹夊煿鍏堢敓鑰屽懡鍚...
