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Physics Question on Electric Dipole

Two electric dipoles of dipole moments 1.2 × 10–30 C-m and 2.4 × 10–30 C-m are placed in two different uniform electric fields of strength 5 × 104 NC–1 and 15 × 104 NC–1 respectively. The ratio of maximum torque experienced by the electric dipoles will be 1:x. The value of x is _______

Answer

τ1τ2\frac{\tau_1}{\tau_2}=μ1B1sin90μ2B2sin90v\frac{μ_1B_1sin 90}{μ_2B_2sin90 v}=1.2×10−30×5×1042.4×10−30×15×104\frac{1.2×10^{−30}×5×10^4}{2.4×10^{−30}×15×10^4}=16\frac{1}{6}