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Class 10 Class 12

વિદ્યુતભાર અને વિદ્યુતક્ષેત્ર

બંધ પૃષ્ઠમાં દાખલ થતું અને બહાર આવતું વિદ્યુત ફલક્સ અનુક્રમે

bold 8 bold space bold cross times bold space bold 10 to the power of bold 3 bold space bold અને bold space bold 4 bold space bold cross times bold space bold 10 to the power of bold 3

એકમ છે તો આ બંધને બંધ પૃષ્ઠમાં કુલ વિદ્યુતભાર ............... હશે.

$bold minus bold 4 bold space bold cross times bold space bold 10 to the power of bold 3 bold space bold C$
$bold 4 bold space bold cross times bold space bold 10 to the power of bold 3 bold space bold C$
$<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>$
$bold minus bold 4 bold space bold cross times bold space bold 10 to the power of bold 3 bold space bold epsilon subscript bold 0 bold space bold C$

d અંતરે રાખેલા બે વિદ્યુતભારો વચ્ચે હવાના માધ્યમના બદલે K જેટલો ડાઈઈલેક્ટ્રિક અચળાંક ધરાવતા માધ્યમને મૂકતાં લાગતું આકર્ષણબળ.........

K^-1ગણું બને.
બદલાતું નથી.
K² ગણું થાય.
K ગણું થાય.

K^-1ગણું બને.

Tips: -

હવામાં લાગતું બળ $bold F bold space bold equals bold space fraction numerator bold 1 over denominator bold 4 bold πε subscript bold 0 end fraction bold space fraction numerator bold q subscript bold 1 bold q subscript bold 2 over denominator bold d to the power of bold 2 end fraction$

K ડાઈ ઈલેક્ટ્રિકવાળા માધ્યમની પરમિટિવિટી $bold epsilon$ હોય તો માધ્યમમાં લાગતું બળ $bold F bold apostrophe bold space bold equals bold space fraction numerator bold 1 over denominator bold 4 bold πε end fraction bold space fraction numerator bold q subscript bold 1 bold q subscript bold 2 over denominator bold d to the power of bold 2 end fraction$

પરંતુ $bold K bold space bold equals bold space bold epsilon over bold epsilon subscript bold 0$ પરથી $bold epsilon bold space bold equals bold space bold epsilon subscript bold 0 bold space bold K$ મૂકતાં

$bold F bold apostrophe bold space bold equals bold space fraction numerator bold 1 over denominator bold 4 bold πε subscript bold 0 bold K end fraction bold space fraction numerator bold q subscript bold 1 bold q subscript bold 2 over denominator bold r to the power of bold 2 end fraction bold space bold equals bold space bold F over bold K bold space bold equals bold space bold F bold space bold K to the power of bold minus bold 1 end exponent$

એક સમઘનના કેન્દ્ર પર Q વિદ્યુતભાર મૂકેલ છે તો આ સમઘનની બધી બાજુઓમાંથી પસાર થતું ફલક્સ ......... .

$open parentheses bold a close parentheses bold space fraction numerator bold Q over denominator bold 6 bold epsilon subscript bold 0 end fraction$
$open parentheses bold B close parentheses bold space fraction numerator bold Q over denominator bold 8 bold epsilon subscript bold 0 end fraction$
$open parentheses straight C close parentheses bold space bold Q over bold epsilon subscript bold 0$
$open parentheses straight D close parentheses bold space fraction numerator bold Q over denominator bold 3 bold epsilon subscript bold 0 end fraction$