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સ્થિતિ વિદ્યુતસ્થિતિમાન અને કૅપેસિટન્સ

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ભૌતિક વિજ્ઞાન ધોરણ 12 સેમિસ્ટર 3

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ભૌતિક વિજ્ઞાન

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સ્થિતિ વિદ્યુતસ્થિતિમાન અને કૅપેસિટન્સ

R₁ અને R₂ ત્રિજ્યાના બે ગોળાઓને વિદ્યુતભારિત કરીને એકબીજા સાથે તારથી જોડવામાં આવે છે. આથી ગોળાઓ પરના વિદ્યુતક્ષેત્રનો ગુણોત્તર ................. છે.

$fraction numerator bold R subscript bold 2 superscript bold 2 over denominator bold R subscript bold 1 superscript bold 1 end fraction$
$fraction numerator bold R subscript bold 1 superscript bold 2 over denominator bold R subscript bold 2 superscript bold 2 end fraction$
$bold R subscript bold 2 over bold R subscript bold 1$
$bold R subscript bold 1 over bold R subscript bold 2$

20 cm અને 10 cm ત્રિજ્યાની બે ધાતુની કવચોને વાહક તાર વડે જોડતાં સામાન્ય સ્થિતિમાન કેટલું થાય ? દરેક કવચ પર

bold 150 bold space bold μC

ધન વિદ્યુતભાર છે.

$bold 9 bold space bold cross times bold space bold 10 to the power of bold 6 bold space bold V$
$bold 4 bold. bold 5 bold space bold cross times bold space bold 10 to the power of bold 6 bold space bold V$
$bold 1 bold. bold 8 bold space bold cross times bold 10 to the power of bold 7 bold space bold V$
$bold 13 bold. bold 5 bold space bold cross times bold space bold 10 to the power of bold 6 bold space bold V$

હવામાં એકબીજાથી 1 m અંતરે રહેલા બે બિંદુવત્ ઋણ વિદ્યુતભારોના તંત્રની સ્થિતિઊર્જા ............... દરેક વિદ્યુતભારનું મૂલ્ય

bold 2 bold space bold μC

છે.

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$bold 3 bold. bold 6 bold space bold cross times bold space bold 10 to the power of bold minus bold 2 end exponent bold space bold J$
$bold 3 bold. bold 6 bold space bold J$
$bold 3 bold. bold 6 bold space bold cross times bold space bold 10 to the power of bold minus bold 3 end exponent bold space bold J$
$bold 36 bold space bold J$

bold 3 bold. bold 6 bold space bold cross times bold space bold 10 to the power of bold minus bold 2 end exponent bold space bold J

Tips: -

bold U bold space bold equals bold space fraction numerator bold kq subscript bold 1 bold q subscript bold 2 over denominator bold r end fraction bold space bold equals bold space fraction numerator bold 9 bold space bold cross times bold space bold 10 to the power of bold 9 bold space bold cross times bold space bold 2 bold space bold cross times bold space bold 10 to the power of bold minus bold 6 end exponent bold space bold cross times bold space bold 2 bold space bold cross times bold space bold 10 to the power of bold minus bold 6 end exponent over denominator bold 1 end fraction bold space bold equals bold space bold 3 bold. bold 6 bold space bold cross times bold space bold 10 to the power of bold minus bold 2 end exponent bold space bold J

1 cm અને 2 cm ત્રિજ્યાવાળા બે ગોળાઓને અનુક્રમે

bold 10 to the power of bold minus bold 2 end exponent bold space bold C bold space bold અને bold space bold 5 bold space bold cross times bold space bold 10 to the power of bold minus bold 2 end exponent bold space bold C

વિદ્યુતભાર વડે વિદ્યુતભારિત કરેલ છે. જો આ ગોળાઓને તાર વડે જોડવામાં આવે તો નાના ગોળા પરનો વિદ્યુતભાર ગણો.

$bold 3 bold space bold cross times bold space bold 10 to the power of bold minus bold 2 end exponent bold space bold C$
$bold 10 to the power of bold minus bold 2 end exponent bold space bold C$
$bold 4 bold space bold cross times bold space bold 10 to the power of bold minus bold 2 end exponent bold space bold C$
$bold 2 bold space bold cross times bold space bold 10 to the power of bold minus bold 2 end exponent bold space bold C$

એક ધાતુનો નક્કર ગોળો સમાન વિદ્યુત ક્ષેત્રમાં મૂકવામાં આવે છે તો નીચેની આકૃતિમાંથી કઈ ક્ષેત્રરેખા સાચી છે ?

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