如图(a)所示是某生产流水线上的产品输送及计数装置示意图．其中S为一激光源，R 1 为光敏电阻(有光照射时
\u5982\u56fe\u7532\u6240\u793a\u662f\u67d0\u751f\u4ea7\u6d41\u6c34\u7ebf\u4e0a\u7684\u4ea7\u54c1\u8f93\u9001\u53ca\u8ba1\u6570\u88c5\u7f6e\u793a\u610f\u56fe\uff0c\u5176\u4e2dS\u4e3a\u6fc0\u5149\u6e90\uff0cR 1 \u4e3a\u5149\u654f\u7535\u963b\uff08\u6709\u5149\u7167\u5c04 \u65f6\uff0cAD
\uff081\uff09\u8f83\u9ad8 \uff082\uff090.5m/s (3)0.05A 20\u03a9 \u8bd5\u9898\u5206\u6790\uff1a\uff081\uff09\u5149\u654f\u7535\u963b\u65e0\u5149\u7167\u5c04\u65f6\uff0c\u963b\u503c\u8f83\u5927\uff0c\u5149\u88ab\u4ea7\u54c1\u6321\u4f4f\u65f6\uff0cR 1 \u4e24\u7aef\u7684\u7535\u538b\u8f83\u9ad8 \uff082\uff09\u89c2\u5bdf\u56fe\uff08\u4e59\uff09\u77e5\u6321\u5149\u65f6\u95f4\u4e3a0.2s\uff0c\u56e0\u6b64\u4f20\u9001\u5e26\u7684\u901f\u5ea6 \uff083\uff09\u65e0\u5149\u7167\u5c04\u65f6\u7535\u8def\u4e2d\u7684\u7535\u6d41\uff1a \uff1b\u6709\u5149\u7167\u5c04\u65f6\u7535\u8def\u4e2d\u7684\u7535\u6d41\uff1a \uff0c
| ：（1）光敏电阻在有光照和光被挡住两种状态下的阻值分别为：20Ω和40Ω （2）整条电路在1小时内消耗的电能为2.88×103J 绛旓細瑙ｏ紙1锛夌敱棰樼煡锛孯1涓嶳2涓茶仈鎺ュ湪6V鐢垫簮涓婏紝鈶犳湁鍏夌収灏勬椂锛岄樆鍊艰緝灏忥紝鍒嗗帇杈冨皬U1=3V锛孶2=U-U1=6V-3V=3V锛涒埖I=U1R灏=U2R2锛屸埓R灏=U1R2U2=3V脳20惟3V=20惟鈶℃棤鍏夌収灏勬椂锛岄樆鍊艰緝澶э紝鍒嗗帇杈冨ぇ涓篣鈥1=4V锛孶鈥2=U-U鈥1=6V-4V=2V锛涒埖I=U鈥1R澶=U鈥2R2锛孯澶=U鈥1R2U鈥2=4V... 绛旓細R 1 涓嶳 2 涓茶繛鎺ュ湪6V鐢垫簮涓婏紝鈶犳湁鍏夌収灏勬椂锛岄樆鍊艰緝灏忥紝鍒嗗帇杈冨皬U 1 =3V锛孶 2 =U锕 1 =6V锕3V=3V锛涒埖 锛屸埓 鈶℃棤鍏夌収灏勬椂锛岄樆鍊艰緝澶э紝 绛旓細锛1锛夌敱棰樼煡锛孯1涓嶳2涓茶仈鎺ュ湪6V鐢垫簮涓婏紝浠庡浘璞′笂鍙煡锛氣憼鏈夊厜鐓у皠鏃讹紝R1涓ょ鐨勭數鍘嬶細U1=3V锛孶2=U-U1=6V-3V=3V锛涘垯I=U2R2=3V20惟=0.15A锛屸埓R1=U1I=3V0.15A=20惟锛涒憽鏃犲厜鐓у皠鏃讹紝R1涓ょ鐨勭數鍘嬶細U1鈥=4V锛孶2鈥=U-U1鈥=6V-4V=2V锛 鍒橧鈥=U2鈥睷2=2V20惟=0.1A锛屸埓R1鈥=U1鈥... 绛旓細锛1锛夌敱鍥句箼鎵绀鍥捐薄鍙煡锛屼骇鍝佹尅鍏夋椂闂达細t=0.6s-0.4s=0.2s锛屾鏂瑰舰浜у搧闅忎紶閫佸甫杩愬姩鐨勯熷害锛歷=st=0.1m0.2s=0.5m/s锛涳紙2锛夌敱鍥捐薄鍙煡锛屾湁鍏夌収灏勬椂锛屽厜鏁忕數闃讳袱绔數鍘婾1=2V锛屾鏃禦2涓ょ鐢靛帇U2=U-U1=6V-2V=4V锛岀數璺數娴両=I2=U2R2=4V20惟=0.2A锛屸埖I=UR锛屸埓姝ゆ椂鍏夋晱鐢甸樆闃诲硷細R1=U... 绛旓細2V=12锛岃В寰桿=6V锛涳紙3锛夌敱鍥捐薄鍙煡锛氭瘡缁忚繃0.6s锛屽氨鏈変竴涓骇鍝侀氳繃璁℃暟瑁呯疆锛屽叾涓0.4s鏈夊厜鐓у皠锛岀數闃籖2娑堣楃殑鐢佃兘W2=U2It1=4V脳0.1A脳0.4s=0.16J锛涘叾涓0.2s鏃犲厜鐓у皠锛岀數闃籖2娑堣楃殑鐢佃兘W2鈥=U2鈥睮鈥瞭2=2V脳0.05A脳0.2s=0.02J锛涘洜姝ゆ瘡缁忚繃0.6s锛岀數闃籖2娑堣楃殑鐢佃兘涓篧=W2+W2鈥=0.... 绛旓細=800惟.鎵浠A閫夐」閿欑殑,C閫夐」涔熸槸閿欑殑. 鏈夊厜鐓у皠鍜屾棤鍏夌収灏勬椂淇濇姢鐢甸樆R2涓ょ鐨勭數鍘嬪垎鍒负4V鍜2V,鎵浠ョ數鍘嬩箣姣斾负2锛1,鎵浠閫夐」閿欑殑.浠庝箼鍥惧彲浠ョ湅鍑,姣忛氳繃涓涓骇鍝佺殑鍛ㄦ湡涓0.6s,鎵浠ユ瘡1h閫氳繃S涓嶳1涔嬮棿鐨勪骇鍝佷釜鏁颁负(60*60)s*(1/0.6)=6000涓.鎵浠閫夐」姝ｇ‘鐨.缁煎悎鍙煡姝ｇ‘绛旀涓篋. 绛旓細锛1锛夌敱鍥剧煡锛孯1涓嶳2涓茶仈锛屾棤鍏夌収鏃禦1鐨勭數鍘嬩负4V锛屾湁鍏夌収鏃禦1鐨勭數鍘嬩负2V锛氭棤鐓ф椂锛岀數璺腑鐨勭數娴侊細I1=I2=U?U1R2=6V?4V40惟=0.05A锛孯1=U1I1=4V0.05A=80惟锛涙湁鍏夌収鏃讹紝鐢佃矾涓殑鐢垫祦锛欼1'=I2'=U?U鈥1R2=6V?2V40惟=0.1AR1'=U鈥1I鈥1=2V0.1A=20惟锛涳紙2锛夌敱鍥捐薄鐭ワ紝1h鍐... 绛旓細褰撴湁鍏夌収灏勬椂锛孯 1 鐨勯樆鍊煎彉灏忥紝鐢佃矾鐨勬荤數闃诲彉灏忥紱鏍规嵁 鍙煡锛岀數璺腑鐨勭數娴佸彉澶э紱鏍规嵁U=IR鍙煡锛孯 2 涓ょ鐨勭數鍘嬪彉澶х敱鍥捐薄鍙緱 锛屽垯 R 1 鏃犳縺鍏夌収鏃讹紝鐢卞浘璞″彲寰 锛 锛屾墍浠ワ紝鏈夊厜鐓у皠鍜屾棤鍏夌収灏勬椂淇濇姢鐢甸樆R 2 涓ょ鐨勭數鍘嬩箣姣 锛屾晠D涓嶆纭傛晠閫塁銆傜偣璇勶細鏈鑰冩煡浜嗗帇寮虹殑璁＄畻... 绛旓細鍗砇 1 涓ょ鐨勭數鍘嬭緝浣庯紝鐢卞浘璞＄煡R 1 鐨勭數鍘婾 1 =2V锛屽垯U 2 =U-U 1 =6V-2V=4V锛岀數璺腑鐨勭數娴侊細 鍏夋晱鐢甸樆鐨勯樆鍊硷細 鎵浠姝ｇ‘锛庯紙2锛塕 1 鏃犳縺鍏夌収鏃讹紝鐢卞浘璞″彲寰桿 1 鈥=4V锛孶 2 鈥=U-U 1 鈥=6V-4V=2V锛屾墍浠ワ紝鏈夊厜鐓у皠鍜屾棤鍏夌収灏勬椂淇濇姢鐢甸樆R 2 涓ょ鐨勭數鍘嬩箣姣擴 2 锛... 绛旓細锛1锛0.5m/s锛2锛10惟锛3锛3600 J 璇曢鍒嗘瀽锛氾紙1锛 m/s锛2锛夋湁鍏夌収鏃讹紝 U 1 =2V鍥犱负涓茶仈锛屾墍浠 鍗 R 1 鏈 锛10惟锛3锛夋湁鍏夌収鏃讹紝 A鏃犲厜鐓ф椂锛 A涓涓懆鏈燂紙鏈夊厜鐓0.4s锛屾棤鍏夌収0.2s锛夋秷鑰楃數鑳斤細 J 1h娑堣楃數鑳斤細 J鐐硅瘎锛氭湰棰樺叧閿湪浜庢牴鎹鎰忓拰绀烘尝鍣ㄦ樉绀... 本站交流只代表网友个人观点，与本站立场无关 |
