Two electric dipoles of dipole moments $1.2 \times 10^{-30} \,\mathrm{Cm}$ and $2.4 \times 10^{-30} \,\mathrm{Cm}$ are placed in two different uniform electric fields of strengths $5 \times 10^{4} \,\mathrm{NC}^{-1}$ and $15 \times 10^{4} \,\mathrm{NC}^{-1}$ respectively. The ratio of maximum torque experienced by the electric dipoles will be $\frac{1}{x}$. The value of $x$ is __________.
Answer (integer)
6
Solution
<p>$${{{\rho _1}} \over {{\rho _2}}} = {{{\mu _1}{B_1}\sin 90} \over {{\mu _2}{B_2}\sin 90}}$$</p>
<p>$$ = {{1.2 \times {{10}^{ - 30}} \times 5 \times {{10}^4}} \over {2.4 \times {{10}^{ - 30}} \times 15 \times {{10}^4}}}$$</p>
<p>$= {1 \over 6}$</p>
About this question
Subject: Physics · Chapter: Electrostatics · Topic: Electric Field and Field Lines
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