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1. Electric Charges and Fields
normal
સેટેલાઇટમાં આકૃતિ મુજબ ગોળા લટકાવતાં દોરી વચ્ચેનો ખૂણો અને દોરીમાં તણાવ કેટલું થાય?
A
${180^o},\frac{1}{{4\pi {\varepsilon _0}}}.\frac{{{Q^2}}}{{{{(2L)}^2}}}$
B
${90^ \circ },\frac{1}{{4\pi {\varepsilon _0}}}.\frac{{{Q^2}}}{{{L^2}}}$
C
${180^ \circ },\frac{1}{{4\pi {\varepsilon _0}}}.\frac{{{Q^2}}}{{2{L^2}}}$
D
${180^o},\frac{1}{{4\pi {\varepsilon _0}}}.\frac{{QL}}{{4{L^2}}}$
Solution
$\theta = {180^ \circ }$ $F = \frac{1}{{4\pi {t_0}}}.\frac{{{Q^2}}}{{{{\left( {2L} \right)}^2}}}$
Standard 12
Physics
