Questions
Electric dipole consists of two charges of magnitude separated by a distance of 2 cm. The dipole is in an external field of 105 N/C. What maximum torque does the field exert on the dipole?
detailed solution
Correct option is C
qc=0.1μC=10−7C,2a=2cm=2×10−2mE=105N/C,τ=?As we know τ=P×Esinθ, For maxτ,sinθ=1τ=2×10−4N−m ∵sinθmax=1Talk to our academic expert!
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Two opposite and equal charges 4 × 10–8 coulomb when placed 2 × 10–2 cm away, from a dipole. If this dipole is placed in an external electric field 4 × 108 newton/coulomb, the value of maximum torque and the work done in rotating it through 180o will be
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