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Physics - Electrostatics Question with Solution | TestHub

PhysicsElectrostaticsdipoleEasy2 minPYQ_2020

PhysicsEasysingle choice

Charges $+ q$ and $- q$ are placed at $A$ and $B$ , respectively, which are at a distance $2 L$ apart. If $C$ is the midpoint between $A$ and $B$ , then work done in moving charge $Q$ from $C$ to $D$ (through semicircular path $CRD$ ) and from $C$ to $\infty$ are, respectively,

Options:

Answer:

Solution:

$W_{C R D} = Q (V_{D} - V_{C})$

$W_{C R D} = Q [V_{D} - 0]$ ( $∵$ potential at centre of dipole is zero)

$W_{C R D} = [\frac{k q}{3 L} - \frac{k q}{L}] Q$

$W_{C R D} = - \frac{k q Q}{L} \times \frac{2}{3} = - \frac{q Q}{6 π ε_{0} L}$

Stream:NTA_ABHYAS_NEETSubject:PhysicsTopic:ElectrostaticsSubtopic:dipole

⏱ 2mℹ️ Source: PYQ_2020

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