https://peda.net/id/7ca9859edf6 2019-09-30T14:35:27+03:00 https://peda.net/:static/535/peda.net.logo.bg.svg <div class="license">Tämän sivun lisenssi <a rel="license" href="https://peda.net/info">Peda.net-yleislisenssi</a></div> https://peda.net/id/d7b23000df6 2019-09-26T10:16:01+03:00 3-2<br/> a) ei, jännitehäviötä ei tiedetä<br/> b) joo<br/> c) ei<br/> d) joo<br/> <br/> 3-3<br/> a)<br/> A 4,5V<br/> B 3V<br/> b)<br/> A 35mA<br/> B 50mA<br/> c) <br/> vastuslangat noudattavat Ohmin lakia, sillä kuvaajat ovat suoria<br/> <br/> 3-4<br/> sininen lanka:<br/> I=10mA <br/> U=3,5V<br/> R=U/I<br/> R=<img src="https://math-demo.abitti.fi/math.svg?latex=%5Cfrac%7B3%7B%2C%7D5V%7D%7B0%7B%2C%7D010A%7D%3D350%5COmega" alt="\frac{3{,}5V}{0{,}010A}=350\Omega"/><br/> punainen lanka:<br/> I=20mA<br/> U=3V<br/> R=<img src="https://math-demo.abitti.fi/math.svg?latex=%5Cfrac%7B3%7B%2C%7D0V%7D%7B0%7B%2C%7D020A%7D%3D150%5COmega" alt="\frac{3{,}0V}{0{,}020A}=150\Omega"/><br/> <br/> <br/> 3-5<br/> a)<br/> <a href="https://peda.net/p/oskari.lahtinen/fy3s-s%C3%A4hk%C3%B6/3oljr/oispa-ruokaa/sieppaa-png#top" title="Sieppaa.PNG"><img src="https://peda.net/p/oskari.lahtinen/fy3s-s%C3%A4hk%C3%B6/3oljr/oispa-ruokaa/sieppaa-png:file/photo/1a79152c88ce7aab7bd3375a2761ac3b9cff7ea6/Sieppaa.PNG" alt="" title="Sieppaa.PNG" class="inline" loading="lazy"/></a><br/> b) kulmakertoimesta saadaan resistanssi 0,0218V/mA, eli 21,8 ohmia<br/> c) <a href="https://peda.net/p/oskari.lahtinen/fy3s-s%C3%A4hk%C3%B6/3oljr/oispa-ruokaa/sieppaa-png2#top" title="Sieppaa.PNG"><img src="https://peda.net/p/oskari.lahtinen/fy3s-s%C3%A4hk%C3%B6/3oljr/oispa-ruokaa/sieppaa-png2:file/photo/0d79b485a8634f42493b6aa2b289faa6665539d5/Sieppaa.PNG" alt="" title="Sieppaa.PNG" class="inline" loading="lazy"/></a><br/> <br/> <br/> 3-7<br/> <img src="https://math-demo.abitti.fi/math.svg?latex=R%3D%5Cfrac%7BU%7D%7BI%7D%3D%5Cfrac%7B4%7B%2C%7D5V%7D%7B0%7B%2C%7D012A%7D%3D375%5COmega" alt="R=\frac{U}{I}=\frac{4{,}5V}{0{,}012A}=375\Omega"/><br/> <img src="https://math-demo.abitti.fi/math.svg?latex=U%3DRI%3D375%5COmega%5Ccdot0%7B%2C%7D066A%3D24%7B%2C%7D75V" alt="U=RI=375\Omega\cdot0{,}066A=24{,}75V"/><br/> 3-8<br/> a)<br/> <a href="https://peda.net/p/oskari.lahtinen/fy3s-s%C3%A4hk%C3%B6/3oljr/oispa-ruokaa/sieppaa-png3#top" title="Sieppaa.PNG"><img src="https://peda.net/p/oskari.lahtinen/fy3s-s%C3%A4hk%C3%B6/3oljr/oispa-ruokaa/sieppaa-png3:file/photo/6eb72e13edf8fcdf57d312c3a6ec247a35f28196/Sieppaa.PNG" alt="" title="Sieppaa.PNG" class="inline" loading="lazy"/></a><br/> b)<br/> U=RI<br/> <img src="https://math-demo.abitti.fi/math.svg?latex=U%3D220%5COmega%5Ccdot0%7B%2C%7D02A%3D4%7B%2C%7D4V" alt="U=220\Omega\cdot0{,}02A=4{,}4V"/><br/> 3-9<br/> a)<br/> R=U/I<br/> <img src="https://math-demo.abitti.fi/math.svg?latex=R%3D%5Cfrac%7B7%7B%2C%7D35V%7D%7B1%7B%2C%7D08A%7D%3D6%7B%2C%7D8055...%5COmega" alt="R=\frac{7{,}35V}{1{,}08A}=6{,}8055...\Omega"/><br/> b)<br/> I=U/R<br/> <img src="https://math-demo.abitti.fi/math.svg?latex=I%3D%5Cfrac%7B15V%7D%7B6%7B%2C%7D8055...%5COmega%7D%3D2%7B%2C%7D2041...A" alt="I=\frac{15V}{6{,}8055...\Omega}=2{,}2041...A"/><br/> c)<br/> U=RI<br/> <img src="https://math-demo.abitti.fi/math.svg?latex=U%3D6%7B%2C%7D8055...%5COmega%5Ccdot0%7B%2C%7D200A%3D1%7B%2C%7D361...V" alt="U=6{,}8055...\Omega\cdot0{,}200A=1{,}361...V"/> <br/> <br/> 3-10<br/> a) 1,5V<br/> b) <br/> <img src="https://math-demo.abitti.fi/math.svg?latex=R%3D%5Cfrac%7BU%7D%7BI%7D%3D%5Cfrac%7B0%7B%2C%7D5V%7D%7B0%7B%2C%7D02mA%7D%3D25%5COmega" alt="R=\frac{U}{I}=\frac{0{,}5V}{0{,}02mA}=25\Omega"/><br/> <img src="https://math-demo.abitti.fi/math.svg?latex=R%3D%5Cfrac%7B2%7B%2C%7D5V%7D%7B0%7B%2C%7D05mA%7D%3D50%5COmega" alt="R=\frac{2{,}5V}{0{,}05mA}=50\Omega"/><br/> c) hehkulangan lämpötila kasvaa, joten resistanssikin kasvaa<br/> 3-11<br/> a) ei noudata, kuvaaja ei ole suora<br/> b) <img src="https://math-demo.abitti.fi/math.svg?latex=R%3D%5Cfrac%7BU%7D%7BI%7D%3D%5Cfrac%7B3%7B%2C%7D0V%7D%7B0%7B%2C%7D04A%7D%3D0%7B%2C%7D012%5C%20%5COmega" alt="R=\frac{U}{I}=\frac{3{,}0V}{0{,}04A}=0{,}012\ \Omega"/><br/> <br/> <br/> 3-13 <br/> 5600 ohmia 2019-09-25T10:34:00+03:00