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ભૌતિક વિજ્ઞાન ધોરણ 12 સેમિસ્ટર 3

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ભૌતિક વિજ્ઞાન

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CBSE Gujarat Board Haryana Board

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Class 10 Class 12

પ્રવાહ વિદ્યુત

$bold 10 bold space bold capital omega$ અવરોધ ધરાવતા તારને સમાન રીતે ખેંચીને તેની લંબાઈમાં 10% નો વધારો કરવામાં આવે તો નવા તારનો અવરોધ કેટલો થાય ?

$bold 1 bold. bold 1 bold space bold capital omega$
$bold 11 bold. bold 1 bold space bold capital omega$
$<pre>uncaught exception: Http Error #404 in file: /home/config_admin/public/felixventures.in/public/application/css/plugins/tiny_mce_wiris/integration/lib/com/wiris/plugin/impl/HttpImpl.class.php line 61 #0 [internal function]: com_wiris_plugin_impl_HttpImpl_0(Object(com_wiris_plugin_impl_HttpImpl), NULL, 'http://www.wiri...', 'Http Error #404') #1 /home/config_admin/public/felixventures.in/public/application/css/plugins/tiny_mce_wiris/integration/lib/php/Boot.class.php(769): call_user_func_array('com_wiris_plugi...', Array) #2 [internal function]: _hx_lambda->execute('Http Error #404') #3 /home/config_admin/public/felixventures.in/public/application/css/plugins/tiny_mce_wiris/integration/lib/haxe/Http.class.php(532): call_user_func_array(Array, Array) #4 [internal function]: haxe_Http_5(true, Object(com_wiris_plugin_impl_HttpImpl), Object(com_wiris_plugin_impl_HttpImpl), Array, Object(haxe_io_BytesOutput), true, 'Http Error #404') #5 /home/config_admin/public/felixventures.in/public/application/css/plugins/tiny_mce_wiris/integration/lib/php/Boot.class.php(769): call_user_func_array('haxe_Http_5', Array) #6 [internal function]: _hx_lambda->execute('Http Error #404') #7 /home/config_admin/public/felixventures.in/public/application/css/plugins/tiny_mce_wiris/integration/lib/com/wiris/plugin/impl/HttpImpl.class.php(27): call_user_func_array(Array, Array) #8 /home/config_admin/public/felixventures.in/public/application/css/plugins/tiny_mce_wiris/integration/lib/haxe/Http.class.php(444): com_wiris_plugin_impl_HttpImpl->onError('Http Error #404') #9 /home/config_admin/public/felixventures.in/public/application/css/plugins/tiny_mce_wiris/integration/lib/haxe/Http.class.php(458): haxe_Http->customRequest(true, Object(haxe_io_BytesOutput), NULL, NULL) #10 /home/config_admin/public/felixventures.in/public/application/css/plugins/tiny_mce_wiris/integration/lib/com/wiris/plugin/impl/HttpImpl.class.php(40): haxe_Http->request(true) #11 /home/config_admin/public/felixventures.in/public/application/css/plugins/tiny_mce_wiris/integration/lib/com/wiris/plugin/impl/TextServiceImpl.class.php(80): com_wiris_plugin_impl_HttpImpl->request(true) #12 /home/config_admin/public/felixventures.in/public/application/css/plugins/tiny_mce_wiris/integration/service.php(19): com_wiris_plugin_impl_TextServiceImpl->service('mathml2accessib...', Array) #13 {main}</pre>$
$bold 13 bold. bold 1 bold space bold capital omega$

<pre>uncaught exception: <b>Http Error #404</b><br /><br />in file: /home/config_admin/public/felixventures.in/public/application/css/plugins/tiny_mce_wiris/integration/lib/com/wiris/plugin/impl/HttpImpl.class.php line 61<br />#0 [internal function]: com_wiris_plugin_impl_HttpImpl_0(Object(com_wiris_plugin_impl_HttpImpl), NULL, 'http://www.wiri...', 'Http Error #404') #1 /home/config_admin/public/felixventures.in/public/application/css/plugins/tiny_mce_wiris/integration/lib/php/Boot.class.php(769): call_user_func_array('com_wiris_plugi...', Array) #2 [internal function]: _hx_lambda->execute('Http Error #404') #3 /home/config_admin/public/felixventures.in/public/application/css/plugins/tiny_mce_wiris/integration/lib/haxe/Http.class.php(532): call_user_func_array(Array, Array) #4 [internal function]: haxe_Http_5(true, Object(com_wiris_plugin_impl_HttpImpl), Object(com_wiris_plugin_impl_HttpImpl), Array, Object(haxe_io_BytesOutput), true, 'Http Error #404') #5 /home/config_admin/public/felixventures.in/public/application/css/plugins/tiny_mce_wiris/integration/lib/php/Boot.class.php(769): call_user_func_array('haxe_Http_5', Array) #6 [internal function]: _hx_lambda->execute('Http Error #404') #7 /home/config_admin/public/felixventures.in/public/application/css/plugins/tiny_mce_wiris/integration/lib/com/wiris/plugin/impl/HttpImpl.class.php(27): call_user_func_array(Array, Array) #8 /home/config_admin/public/felixventures.in/public/application/css/plugins/tiny_mce_wiris/integration/lib/haxe/Http.class.php(444): com_wiris_plugin_impl_HttpImpl->onError('Http Error #404') #9 /home/config_admin/public/felixventures.in/public/application/css/plugins/tiny_mce_wiris/integration/lib/haxe/Http.class.php(458): haxe_Http->customRequest(true, Object(haxe_io_BytesOutput), NULL, NULL) #10 /home/config_admin/public/felixventures.in/public/application/css/plugins/tiny_mce_wiris/integration/lib/com/wiris/plugin/impl/HttpImpl.class.php(40): haxe_Http->request(true) #11 /home/config_admin/public/felixventures.in/public/application/css/plugins/tiny_mce_wiris/integration/lib/com/wiris/plugin/impl/TextServiceImpl.class.php(80): com_wiris_plugin_impl_HttpImpl->request(true) #12 /home/config_admin/public/felixventures.in/public/application/css/plugins/tiny_mce_wiris/integration/service.php(19): com_wiris_plugin_impl_TextServiceImpl->service('mathml2accessib...', Array) #13 {main}</pre>

Tips: -

bold R bold space bold equals bold space bold ρl over bold A bold space bold equals bold space bold ρl to the power of bold 2 over bold V bold space bold rho bold comma bold space bold V bold space bold અચળ bold space bold હોવાથી bold space bold R bold space bold proportional to bold space bold l to the power of bold 2 bold R subscript bold 2 over bold R subscript bold 1 bold space bold equals bold space open parentheses bold l subscript bold 2 over bold l subscript bold 1 close parentheses to the power of bold 2 bold comma bold space bold l subscript bold 2 bold space bold equals bold space bold l subscript bold 1 bold space bold plus bold space bold 10 bold space bold percent sign bold space bold l subscript bold 1 bold space bold equals bold space bold 1 bold. bold 1 bold space bold l subscript bold 1 bold equals bold space open parentheses fraction numerator bold 1 bold. bold 1 bold space bold l subscript bold 1 over denominator bold l subscript bold 1 end fraction close parentheses to the power of bold 2 bold space bold equals bold space bold 1 bold. bold 21 bold R subscript bold 2 bold space bold equals bold space bold 1 bold. bold 21 bold space bold R subscript bold 1 bold space bold equals bold space bold 1 bold. bold 21 bold space bold cross times bold space bold 1 bold space bold equals bold space bold 1 bold. bold 21 bold space bold capital omega

300 K તાપમાને

bold 1 bold space bold capital omega

અવરોધ ધરાવતા પદાર્થનો અવરોધ કયા તાપમાને

bold 2 bold space bold capital omega

થશે ? અવરોધકતા તાપમાન ગુણાંક

bold 0 bold. bold 00125 bold space open parentheses bold degree bold C close parentheses to the power of bold minus bold 1 end exponent

છે.

1400 K
1154 K
1127 K
600 K

r ત્રિજ્યા ધરાવતા તારનો અવરોધ R છે. જો આ તારમાંથી 2r ત્રિજ્યાવાળો નવો તાર બનાવવામાં આવે તો નવો અવરોધ .................. થશે.

$bold R over bold 2$
$bold R over bold 16$
2R
4R

વાહકનો વિશિષ્ટ અવરોધ .................. પર આધારિત છે.

લંબાઈ
આડછેદના ક્ષેત્રફળ
દળ
ઉપરમાંથી એકપણ નહિ.

કેટલા ઈલેક્ટ્રોન 1 A નો પ્રવાહ રચે છે ?

$bold 6 bold. bold 25 bold space bold cross times bold space bold 10 to the power of bold 9$
$bold 6 bold. bold 25 bold space bold cross times bold space bold 10 to the power of bold 18$
$bold 6 bold. bold 25 bold space bold cross times bold space bold 10 to the power of bold 5$
$bold 6 bold. bold 25 bold space bold cross times bold space bold 10 to the power of bold 6$

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