瀛︿範蹇呭
娆㈣繋涓嬭浇
涓撻锛氬甫鐢电矑瀛愬湪澶嶅悎涓殑杩愬姩
鏁欏鐩爣
浜嗚В绮掑瓙鍦ㄥ彔鍔犲満涓殑杩愬姩瑙勫緥鍜岀壒鐐癸紝骞惰兘瑙ｅ喅鏈夊叧闂
鏁欏杩囩▼
涓�銆佸熀鏈煡璇?/p>
1
銆侀�熷害閫夋嫨鍣ㄥ師鐞嗭紙甯︾數绮掑瓙鍨傜洿杩涘叆
E
鍜?/p>
B
鐨勬浜ゅ彔鍔犲満锛?/p>
a
銆佸彈鍔涚壒鐐癸細
F
鐢?/p>
涓?/p>
F
纾?/p>
鏂瑰悜鐩稿弽锛堥噸鍔涗笉璁★級
銆?/p>
b
銆佺矑瀛愬寑閫熼�氳繃閫夋嫨鍣ㄧ殑鏉′欢锛氬鍥撅紝浠庝笉鍚岃搴︾湅鏈変笁绉嶇瓑鏁堢殑鏉′欢锛?/p>
A
銆佸姏鐨勮搴?/p>
Eq=Bqv
0
B
銆侀�熷害鐨勮搴?/p>
v
0
=E/B
C
銆佸姛鐨勮搴?/p>
W
F
鐢?/p>
=qEd=0
c
銆佺矑瀛愰�氳繃閫夋嫨鍣ㄧ殑閫斿緞锛?/p>
A
銆佸綋
V
0
涓�瀹氭椂锛岃皟鑺?/p>
E
鍜?/p>
B
鐨勫ぇ灏?/p>
B
銆佸綋
E
鍜?/p>
B
涓�瀹氭椂锛岃皟鑺傚姞閫熺數鍘?/p>
U
鐨勫ぇ灏忋�?/p>
鐢卞姛鑳藉叧绯诲拰鍖�閫熻繍鍔ㄧ殑鏉′欢鍙煡
qU=1/2mv
0
2
=1/2m(E/B)
2
鍔犻�熺數鍘嬩负
U=mE
2
/(2qB
2
)
2
銆佺浣撳彂鐢垫満
a
銆佸伐浣滃師鐞嗭細濡傚浘锛岀敱鐕冪儳瀹わ紙
O
锛?/p>
锛屽彂鐢甸�氶亾锛?/p>
E
锛夊拰鍋忚浆
纾佸満锛?/p>
B
锛夌粍鎴愩�傚湪
2500K
浠ヤ笂鐨勯珮娓╀笅锛岀噧鏂欎笌姘у寲鍓?/p>
鍦ㄧ噧鐑у娣峰悎鐕冪儳锛岀數绂讳负姝ｈ礋绂诲瓙
锛堝嵆绛夌瀛愪綋锛?/p>
锛岄珮閫?/p>
杩涘叆纾佸満锛屽苟鍚戜笂涓嬫瀬鏉垮亸杞紝浣夸袱鏋佹澘浜х敓闈欑數鍦猴紝褰?/p>
鐢靛満鍔涗笌纾佸満鍔涚浉绛夋椂锛岀瀛愬寑閫熼�氳繃纾佸満锛屼袱鏋佺數鍔垮樊
鏈�澶э紝褰㈡垚鐢靛師鐢靛姩鍔裤�?/p>
b
銆佺數鍔ㄥ娍鐨勮绠楋細璁炬瀬鏉块棿璺濅负
d
锛岀敱鐢靛娍宸揪鍒版渶澶х殑鏉?/p>
浠?/p>
F
鐢?/p>
=F
纾侊紝
v=E/B=
飦?/p>
/Bd
銆傜數鍔ㄥ娍
飦?/p>
=Bdv
c
銆侀�氶亾涓ょ鐨勫帇寮哄樊鐨勮绠楋細璁惧闃讳负
R
锛岀數鍘熺數闃讳笉璁★紱
閫氶亾妯埅闈㈢Н涓鸿竟闀跨瓑浜?/p>
d
鐨勬鏂瑰舰锛?/p>
鍏ュ彛鍘嬪己涓?/p>
p
1
锛?/p>
鍑哄彛鍘嬪己涓?/p>
p
2
锛?/p>
褰撳紑鍏抽棴鍚堝悗锛?/p>
鍙戠數鏈虹殑鐢靛姛鐜囦负
P
鐢?/p>
=
飦?/p>
2
/R=
锛?/p>
Bdv
锛?/p>
2
/R
銆?/p>
鐢辫兘閲忓畧鎭掞細
P
鐢?/p>
=F
1
v-F
2
v=p
1
Sv-P
2
Sv
閫氶亾鍘嬪己宸负
飦?/p>
p=p
1
-p
2
=B
2
v/R.
浜屻�佷緥棰樺垎鏋?/p>
渚?/p>
1
銆佸鍙冲浘锛屽垵閫熷害涓洪浂鐨勮川瀛愶紝缁?/p>
U=2000V
鐨勭數鍘嬪姞閫熷悗锛屽皠鍏ョ浉璺?/p>
d=2cm
銆佺數鍘嬩负
300V
鐨勫钩琛屾澘鐢靛鍣ㄩ棿銆?/p>
鑻ヨ浣胯川瀛愮┛杩囩數鍦烘椂涓嶅彂鐢熷亸杞紝
闇�瑕佸姞
涓�涓棦鍨傜洿浜庣數鍦烘柟鍚戝張鍨傜洿浜庤川瀛愯繍鍔ㄦ柟鍚戠殑鍖�寮虹鍦猴紝璇ョ鍦虹殑
纾佹劅搴斿己搴︿负澶氬ぇ锛?/p>
渚?/p>
2
銆佸鍥撅紝涓哄疄楠岀敤纾佹祦浣撳彂鐢垫満锛屼袱鏉块棿璺?/p>
d=20cm
纾佸満鐨勭鎰熷簲寮哄害
B=5T
鑻ユ帴棰濆畾
鍔熺巼
P=100W
鐨勭伅娉★紝鎭板ソ姝ｅ父鍙戝厜锛屼笖鐏场姝ｅ父鍙戝厜鏃剁殑鐢甸樆
R=400
飦?/p>
銆備笉璁″彂鐢垫満鐨勭數
闃伙紝姹傦細
锛?/p>
1
锛夌瓑绂诲瓙浣撶殑娴侀�熸槸澶氬ぇ锛?/p>