electric current in conductors

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  • 8/12/2019 Electric Current in Conductors

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    Kjgpt`r # ;6 @a`ktrok Kurr`nt on Khnbukthrs

    Tgi` # 7lgnosjculgrpjysoks.on

    [HAU@ @Z LTA@[

    7. Gn `a ktrhn f`gl jgs gn gp`rtur` 7.4 ll6.G thtga he5.4 7475 `a`ktrhns ih tjrhuij gny p`rp`nbokuagr krhss

    s`ktohn p`r s`khnb. Eonb (g) tj` kurr`nt gnb (f) tj` kurr`nt b`nsoty on tj` f`gl.

    [ha. (g) Rj` thtga kjgri` krhssoni g p`rp`nbokuagr krhsss`ktohn on hn` s`khnb os

    q < n`

    < 5.4 7475 7.5 747? K

    < ?.5 74; K.Rj` kurr`nt os

    o C

    6 (B) Gny he tj`s` tjr ` lgy hkkur

    ,b ozermcs/cb `sg /ccmc ozhceir ics mij i[G 3en pcyu fysBUcYucsg ,hg /cceVhb vc3ucsg bj vc[ar xert tc] `'c% C7h C6ics rcs -(G) C

    71 C

    6 (F) C

    7< C

    6 (K*) C

    7> C

    6 (B)fu rjucsg `sg as bqN Jcj ics abrc

    :. Rwh r`sostgnk` V gnb 6V gr` khnn kt b on s`ro`s on gn `a ktrok korkuot.Rj` tj rlga `n`riy b`v ahp`b on V gnb

    6V gr` on tj` rgtoh

    ncs ozermcs/cb Vh 6V,b eh|qr oemoEc `sg Ms.cj` `sg tcsL+s tcrs i[gG Vh 6V`sg lVoPu rcoj3 tc] bc vuqocr i[ -(G*) 7 = 6 (F) 6 = 7 (K) 7 = 2 (B) 2 = 7

    ?. Rwh r`sostgnk` V gnb 6V gr` khnn`kt`b on pgrgaa a on gn `a ktrok korkuot. Rj` tj`rlga `n`riy b`v ahp`b on V

    gnb 6V gr` on tj` rgtoh

    ncs ozermcs/c Vh 6V,b eh|qr oemoEc `sg a`cPrm ` `sg tcsL+s tcrs i[gG Vh 6V`sg lVoPu rcoj3 tc] bc vuqocr i[ -(G) 7 = 6 (F*) 6 = 7 (K) 7 = 2 (B) 2 = 7

    74. G unoehrl wor` he r`sostgnk` 04os kut onth 0 `quga pgrts. Rj`s` pgrts gr` nhw khnn`kt`b on pgrgaa`a.Rj``quovga`nt r`sostgnk` he tj` khlfongtohn os

    04ozermcs/c bs ,b a`=o rcm bcs 0a`cu Jccxcsg `sg bcUc x3c i[G 3s Jccx vk a`cPrm ` `sg tcsL+s tcrs i[gG ag3cstu bcrq_3 ozermcs/c i[ -(G*) 6 (F) 74 (K) 604 (B) 5604

    77. Khnsob`r tj` ehaahwoni twh stgt`l`nts =

    (g) Corkjjhees munktohn agw ehaahws erhl khns`rvgtohn he kjgri .

    (f) Corkjjhees ahhp agw ehaahws erhl khns`vgtov` n`gtur he `a ktrok eo ab.

    (G*) FhtjG gnb F gr khrr kt (F) G os khrr kt fut F os wrhni

    (K) F os khrr kt futG os wrhni (B) FhtjG gnb F gr wrhni

    eu@u ncs bEcucsg om ehpcm bjet, =(g)ebmpcYW bc age/c eu3` vchs'c bs agm{c.c bcs n'cc]rc i[G(f)ebmpcYW bc oc'c eu3` eh|qr {cs

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    Kjgpt`r # ;6 @a`ktrok Kurr`nt on Khnbukthrs

    Tgi` # 0lgnosjculgrpjysoks.on

    (G) gh fncsucsg aij i[ (F*) gaij i[\ ysebu fxyr i[(K) faij i[\ ysebu gxyr i[ (B) gh fncsucsg xyr i[

    7;. Rwh nhn-ob`ga fgtt ro`s gr` khnn`kt`b on pgrgaa`a. Khnsob`r tj` ehaahwoni stgt`l`nts

    (g) Rj` `quovga`nt `le os slgaa r tjgn `otj`r he tj` twh `les.

    (f) Rj` `quovga`nt ont rnga r`sostgnk` os slgaa`r tjgn `otj`r he tj` twh ont rnga r`sostgnk .

    (G) Fhtj g gnb f gr khrr`kt (F) g os khrr`kt fut f os wrhni

    (K*) f os khrr kt fut g os wrhni (B) @gkj he g gnb f os wrhni SJKUXKjpX;6XHfm-7X7;\

    ncs vucn'c] (nhn-ob`ga)k[Uem3c a`cPrm ` `sg tcsL+j tcrj i[G eu@u bEcucsg om ehpcm bjet, -(g)rq_3 eh|qr hcib ky ncsucsg `sg as ebaj Jcj eh|qr hcib ky as b` i[G(f)rq_3 vcgremb ozermcs/c ncsucsg `sg as ebaj Jcj vcgremb ozermcs/c as b` i[G(G) gh fncsucsg aij i[ (F) gaij i[\ ysebu fxyr i[(K*) faij i[\ ysebu gxyr i[ (B) gh fncsucsg xyr i[

    72. Rj` n`t r sostngk` he gn gll`t`r sjhuab f` slgaa th `nsur` tjgt

    (G) ot bh`s nht i t hv`rj`gt`b (F) ot bh`s nht brgw `xk`ssov` kurr`nt

    (K) ot kgn l`gsur` agri` kurr nts (B*) ot bh`s nht gppr`kogfay kjgni` tj` kurr`nt th f` l`gsur`b.

    ,b v`jUm bc bqy ozermcs/c v_o icsuc pcei, rceb -(G)3i vV3e/cb x`] uc icsG (F)3i vV3e/cb /ccmc u ysgG(K)3i kL+j /ccmcvcsg bcs `co absG (B*)3i `coj tcus hcyj /ccmc `sg bcsf] eh'cs"c oemhr]u u bmsG

    70. Rj` n t r`sostgnk` he g vhatl`t r sjhuab f` agri` th `nsur` tjgt

    (G) ot bh`s nht i`t hv rj`gt b (F) ot bh`s nht brgw`xk`ssov` kurr nt

    (K) ot kgn l`gsur` agri` pht`ntoga boee`r nk`s

    (B*) ot bh`s nht gppr`kogfay kjgni` tj` pht ntoga boee`r`nk` th f` l`gsur`b.

    ,b hcs_U`jUm bc bqy ozermcs/c ve/cb icsuc pcei rceb -(G)3i vV3e/cb x`] uc ics (F)3i vV3e/cb /ccmc uc ysG(K)3i kL+s ehJchcPrmcsg bcs `co absG (B*)3i `cos tcus hcys ehJchcPrm `sg bcsf] l_ysScuj3 oemhr]u uc bmsG

    75. Khnsob r g kgpgkothr-kjgrioni korkuot. A`t W7

    f` tj` kjgri` iov`n th tj` kgpgkothr on g tol` ont rvga he 74 ls

    gnbW6

    f` tj` kjgri` iov`n on tj` n`xt tol` ont rvga he 74 ls. A t 74K kjgri` f` b`phsot`b on g tol` ont rvgat

    7

    gnb tj` n`xt 74lK kjgri` os b`phsot`b on tj` n`xt tol` ont`rvga t6

    .

    ,b ag/ccem

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    Kjgpt`r # ;6 @a`ktrok Kurr`nt on Khnbukthrs

    Tgi` # 5lgnosjculgrpjysoks.on

    (F*) Rj`r` os nh kurr`nt tjrhuij f

    (K*) Rj`r` os g kurr`nt tjrhuij G gs ahni gs tj` kjgrioni os nht khlpa`t .

    (B) Rj`r` os g kurr`nt tjrhuij F gs ahni tj` kjgrioni os nht khlpa`t`.

    ,b ag/ccem

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    Kjgpt`r # ;6 @a`ktrok Kurr`nt on Khnbukthrs

    Tgi` # 9lgnosjculgrpjysoks.on

    (G) Rj` kurr`nt on `gkj he tj` twh boskjgrioni korkuots os z`rh gt t < 4

    (F*) Rj` kurr`nts on tj` twh boskjgrioni korkuots gt t < 4 gr` `quga fut nht z`rh.

    (K) Rj` kurr`nts on tj` twh boskjgrioni korkuots gt t < 4 gr` un`quga

    (B*) K7ahs`s 04% he ots onotoga kjgri` shhn`r tjgn K

    6ahs`s 04% he ots onotoga kjgri`.

    7E /ccemrc bs ,b ag/ccem

  • 8/12/2019 Electric Current in Conductors

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    Kjgpt`r # ;6 @a`ktrok Kurr`nt on Khnbukthrs

    Tgi` # :lgnosjculgrpjysoks.on

    62

    ;7;

    l744.74

    l74)l747(

    G

    < 7 747; .

    Rj` a`gcgi` kurr`nt < 7;747

    v5< 5 747;G.

    0. Eonb tj` r`sostgnk` he g jhaahw kyaonbrokga khnbukthr he a`nitj 7.4 l gnb onn r gnb hut r rgboo 7.4 ll gnb 6.4

    ll r`sp`ktov ay. Rj` r`sostovoty he tj` lgt`roga os 6.4 74

    :

    -l.[ha. Rj` gr`g he krhss-s ktohn he tj` khnbukthr tjrhuij wjokj tj` kjgri`s woaa eahw osG < (6.4 ll)6 (7.4 ll)6

    < ;.4 ll6.Rj` r`sostgnk` he tj` wor` os, tj`r`ehr`,

    V < 65

    :

    l744.;

    l4.7)l744.6(

    G

    < 6.7 0 74; .

    5. G fgtt ry he `le 6 U gnb onotoga r sostgnk` 4.0 os khnn`kt`b gkrhss g r`sostgnk` ?.0 . Jhw lgny`a`ktrhns krhss tjrhuij g krhss-s`ktohn he tj` r`sostgnk` on 7 s`khnb 8

    [ha. Rj` kurr`nt on tj` korkuot os

    o