为了探究电功率的大小与哪些因素有关 电功率的大小与什么因素有关，计算公式是什么
\u4e3a\u4e86\u63a2\u7a76\u7535\u529f\u7387\u7684\u5927\u5c0f\u4e0e\u54ea\u4e9b\u56e0\u7d20\u6709\u5173\uff0c\u4e00\u4f4d\u540c\u5b66\u9996\u5148\u7535\u529f\u7387\u7684\u5927\u5c0f\u5f53\u7136\u67093\u4e2a\u56e0\u7d20\uff0c\u7535\u538b\u3001\u7535\u6d41\u3001\u7535\u963b\u3002 \u5f53\u7535\u963b\u4e0d\u53d8\u7684\u60c5\u51b5\u4e0b\uff0c\u7535\u538b\u8d8a\u5927\uff0c\u529f\u7387\u8d8a\u5927\uff1b\u7535\u6d41\u8d8a\u5927\uff0c\u529f\u7387\u8d8a\u5927 \u5f53\u7535\u538b\u4e0d\u53d8\u7684\u60c5\u51b5\u4e0b\uff0c\u7535\u963b\u8d8a\u5c0f\uff0c\u529f\u7387\u8d8a\u5927\u3002 \u4f5c\u4e3a\u8868\u793a\u7535\u6d41\u505a\u529f\u5feb\u6162\u7684\u7269\u7406\u91cf
\u2474\u4e32\u8054\u7535\u8def P\uff08\u7535\u529f\u7387\uff09U\uff08\u7535\u538b\uff09I\uff08\u7535\u6d41\uff09W\uff08\u7535\u529f\uff09R\uff08\u7535\u963b\uff09T\uff08\u65f6\u95f4\uff09
\u7535\u6d41\u5904\u5904\u76f8\u7b49 I1=I2=I
\u603b\u7535\u538b\u7b49\u4e8e\u5404\u7528\u7535\u5668\u4e24\u7aef\u7535\u538b\u4e4b\u548c U=U1+U2
\u603b\u7535\u963b\u7b49\u4e8e\u5404\u7535\u963b\u4e4b\u548c R=R1+R2
U1\uff1aU2=R1\uff1aR2
\u603b\u7535\u529f\u7b49\u4e8e\u5404\u7535\u529f\u4e4b\u548c W=W1+W2
W1\uff1aW2=R1\uff1aR2=U1\uff1aU2
P1\uff1aP2=R1\uff1aR2=U1\uff1aU2
\u603b\u529f\u7387\u7b49\u4e8e\u5404\u529f\u7387\u4e4b\u548c P=P1+P2
\u2475\u5e76\u8054\u7535\u8def
\u603b\u7535\u6d41\u7b49\u4e8e\u5404\u5904\u7535\u6d41\u4e4b\u548c I=I1+I2
\u5404\u5904\u7535\u538b\u76f8\u7b49 U1=U1=U
\u603b\u7535\u963b\u7b49\u4e8e\u5404\u7535\u963b\u4e4b\u79ef\u9664\u4ee5\u5404\u7535\u963b\u4e4b\u548c R=R1R2\u00f7\uff08R1+R2\uff09
\u603b\u7535\u529f\u7b49\u4e8e\u5404\u7535\u529f\u4e4b\u548c W=W1+W2
I1\uff1aI2=R2\uff1aR1
W1\uff1aW2=I1\uff1aI2=R2\uff1aR1
P1\uff1aP2=R2\uff1aR1=I1\uff1aI2
\u603b\u529f\u7387\u7b49\u4e8e\u5404\u529f\u7387\u4e4b\u548c P=P1+P2
\u2476\u540c\u4e00\u7528\u7535\u5668\u7684\u7535\u529f\u7387
\u2460\u989d\u5b9a\u529f\u7387\u6bd4\u5b9e\u9645\u529f\u7387\u7b49\u4e8e\u989d\u5b9a\u7535\u538b\u6bd4\u5b9e\u9645\u7535\u538b\u7684\u5e73\u65b9 Pe/Ps=(Ue/Us)\u7684\u5e73\u65b9
2\uff0e\u6709\u5173\u7535\u8def\u7684\u516c\u5f0f
\u2474\u7535\u963b R
\u2460\u7535\u963b\u7b49\u4e8e\u6750\u6599\u5bc6\u5ea6\u4e58\u4ee5\uff08\u957f\u5ea6\u9664\u4ee5\u6a2a\u622a\u9762\u79ef\uff09 R=\u5bc6\u5ea6\u00d7\uff08L\u00f7S\uff09
\u2461\u7535\u963b\u7b49\u4e8e\u7535\u538b\u9664\u4ee5\u7535\u6d41 R=U\u00f7I
\u2462\u7535\u963b\u7b49\u4e8e\u7535\u538b\u5e73\u65b9\u9664\u4ee5\u7535\u529f\u7387 R=UU\u00f7P
\u2475\u7535\u529f W
\u7535\u529f\u7b49\u4e8e\u7535\u6d41\u4e58\u7535\u538b\u4e58\u65f6\u95f4 W=UIT\uff08\u666e\u5f0f\u516c\u5f0f\uff09
\u7535\u529f\u7b49\u4e8e\u7535\u529f\u7387\u4e58\u4ee5\u65f6\u95f4 W=PT
\u7535\u529f\u7b49\u4e8e\u7535\u8377\u4e58\u7535\u538b W=QT
\u7535\u529f\u7b49\u4e8e\u7535\u6d41\u5e73\u65b9\u4e58\u7535\u963b\u4e58\u65f6\u95f4 W=I\u00d7IRT\uff08\u7eaf\u7535\u963b\u7535\u8def\uff09
\u7535\u529f\u7b49\u4e8e\u7535\u538b\u5e73\u65b9\u9664\u4ee5\u7535\u963b\u518d\u4e58\u4ee5\u65f6\u95f4 W=U•U\u00f7R\u00d7T\uff08\u540c\u4e0a\uff09
\u2476\u7535\u529f\u7387 P
\u2460\u7535\u529f\u7387\u7b49\u4e8e\u7535\u538b\u4e58\u4ee5\u7535\u6d41 P=UI
\u2461\u7535\u529f\u7387\u7b49\u4e8e\u7535\u6d41\u5e73\u65b9\u4e58\u4ee5\u7535\u963b P=IIR\uff08\u7eaf\u7535\u963b\u7535\u8def\uff09
\u2462\u7535\u529f\u7387\u7b49\u4e8e\u7535\u538b\u5e73\u65b9\u9664\u4ee5\u7535\u963b P=UU\u00f7R(\u540c\u4e0a)
\u2463\u7535\u529f\u7387\u7b49\u4e8e\u7535\u529f\u9664\u4ee5\u65f6\u95f4 P\uff1dW\uff1aT
\u2477\u7535\u70ed Q
\u7535\u70ed\u7b49\u4e8e\u7535\u6d41\u5e73\u65b9\u6210\u7535\u963b\u4e58\u65f6\u95f4 Q=IIRt\uff08\u666e\u5f0f\u516c\u5f0f\uff09
\u7535\u70ed\u7b49\u4e8e\u7535\u6d41\u4e58\u4ee5\u7535\u538b\u4e58\u65f6\u95f4 Q=UIT=W\uff08\u7eaf\u7535\u963b\u7535\u8def
当电阻不变的情况下，电压越大，功率越大；电流越大，功率越大
当电压不变的情况下，电阻越小，功率越大
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绛旓細鐢靛姛鐜囩殑澶у皬褰撶劧鏈3涓洜绱狅紝鐢靛帇銆佺數娴併佺數闃銆傚綋鐢甸樆涓嶅彉鐨勬儏鍐典笅锛岀數鍘嬭秺澶э紝鍔熺巼瓒婂ぇ锛涚數娴佽秺澶э紝鍔熺巼瓒婂ぇ 褰撶數鍘嬩笉鍙樼殑鎯呭喌涓嬶紝鐢甸樆瓒婂皬锛屽姛鐜囪秺澶
绛旓細1. 鍦ㄦ帰绌剁數鍔熺巼鐨勫ぇ灏忎笌鍝簺鍥犵礌鏈夊叧鐨勫疄楠屼腑锛鎴戜滑棣栧厛鏄庣‘浜嗙數鍔熺巼鐨勪笁涓叧閿奖鍝嶅洜绱狅細鐢靛帇銆佺數娴佸拰鐢甸樆銆傚湪鐢甸樆淇濇寔鎭掑畾鐨勬潯浠朵笅锛岀數鍘嬬殑澧炲姞浼氬鑷村姛鐜囩殑澧炲姞锛涘悓鏍凤紝鐢垫祦鐨勫鍔犱篃浼氬鑷村姛鐜囩殑澧炲姞銆傝屽湪鐢靛帇淇濇寔鎭掑畾鐨勬儏鍐典笅锛岀數闃荤殑鍑忓皯鍚屾牱浼氬鑷村姛鐜囩殑澧炲姞銆2. 鐢靛姛鐜囨槸鐢ㄦ潵琛￠噺鐢垫祦鍋氬姛蹇參鐨...
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绛旓細1. 涓轰簡鎺㈢┒鐢靛姛鐜囩殑澶у皬涓庡摢浜涘洜绱犳湁鍏筹紝鎴戜滑闇瑕佸簲鐢ㄦ帶鍒跺彉閲忔硶鏉ヨ璁″疄楠屻2. 鍦ㄧ涓涓疄楠屼腑锛屾垜浠皢淇濇寔鐢靛帇涓嶅彉锛骞舵敼鍙樼數娴佺殑澶у皬锛屼互鐮旂┒鐢靛姛鐜囦笌鐢垫祦涔嬮棿鐨勫叧绯汇3. 鍦ㄧ浜屼釜瀹為獙涓紝鎴戜滑灏嗕繚鎸佺數娴佷笉鍙橈紝骞舵敼鍙樼數鍘嬪硷紝浠ョ爺绌剁數鍔熺巼涓庣數鍘嬩箣闂寸殑鍏崇郴銆4. 涓轰簡鍦ㄥ疄楠屼腑淇濇寔鐢靛帇鎭掑畾锛屾垜浠...
绛旓細鐢靛姛鐜囩殑澶у皬鐢变互涓嬪嚑涓鍥犵礌鍐冲畾锛1. 鐢垫祦鐨勫ぇ灏忥細鐢垫祦鏄數鑽峰湪鐢佃矾涓殑娴佸姩锛屽叾澶у皬鐩存帴褰卞搷鐢靛姛鐜囥傛牴鎹濮嗗畾寰嬶紝鐢垫祦涓庣數璺腑鐨勭數鍘嬪拰鐢甸樆鎴愭姣旓紝鍥犳鐢垫祦瓒婂ぇ锛岀數鍔熺巼涔熻秺澶с2. 鐢靛帇鐨勫ぇ灏忥細鐢靛帇锛屽嵆鐢佃矾涓殑鐢靛娍宸紝鏄帹鍔ㄧ數娴佹祦鍔ㄧ殑鍔ㄥ姏銆傜數鍘嬭秺楂橈紝鎺ㄥ姩鐢垫祦鐨勮兘鍔涜秺寮猴紝浠庤岀數鍔熺巼涔熻秺澶с3...
绛旓細鐢变簬褰卞搷鐢靛姛鐜囩殑鍥犵礌鏈夛細鐢垫祦銆佺數鍘锛屼负浜嗘帰绌剁數鍔熺巼鐨勫ぇ灏忎笌鍝簺鍥犵礌鏈夊叧鏃跺簲鐢ㄦ帶鍒跺彉閲忔硶璁捐瀹為獙锛 锛1锛鎺у埗鐢靛帇涓嶅彉锛屾敼鍙樼數娴锛屾帰绌剁數鍔熺巼涓庣數娴佷箣闂寸殑鍏崇郴锛 锛2锛夋帶鍒剁數娴佷笉鍙橈紝鏀瑰彉鐢靛帇锛屾帰绌剁數鍔熺巼涓庣數鍘嬬殑鍏崇郴锛 瀹為獙锛1锛変腑闇瑕佹帶鍒剁數鍘嬬浉鍚岋紝鍒欏埄鐢ㄥ苟鑱旂數璺潵瀹為獙鍗冲彲锛屽叿浣撶數璺浘濡備笅...
绛旓細鐢靛帇銆佺數娴佸拰鐢甸樆鏄奖鍝嶇數鍔熺巼澶у皬鐨勪笁涓叧閿洜绱犮傚湪鐢甸樆淇濇寔鎭掑畾鐨勬儏鍐典笅锛岀數鍘嬭秺楂橈紝鍔熺巼瓒婂ぇ锛涘悓鏍凤紝鐢垫祦瓒婂ぇ锛屽姛鐜囦篃瓒婂ぇ銆傚綋鐢靛帇淇濇寔涓嶅彉鏃讹紝鐢甸樆瓒婂皬锛屽姛鐜囧悓鏍疯秺澶с傜數鍔熺巼鏄寚鐢靛櫒鍦ㄥ崟浣嶆椂闂村唴娑堣楃殑鐢佃兘锛屽叾璁＄畻鍏紡涓篜=W/T锛屽叾涓璓浠ｈ〃鍔熺巼锛學浠ｈ〃鑳介噺锛孴浠ｈ〃鏃堕棿銆傜數鍣ㄥ湪姝ｅ父宸ヤ綔鐢靛帇涓嬬殑...
绛旓細銆愮瓟妗堛戯細A銆丅鐢靛姛鐜囪绠楀叕寮忕數鍔熺巼澶у皬涓庣數鍘嬶紝鐢垫祦澶у皬鏈夌洿鎺ュ叧绯銆
