Two charges $$+3.2$$×$$10$$−$$19C$$ and −$$3.2$$×$$10$$−$$19C$$ kept $$2.4A0$$ apart forms a dipole. If it is kept in uniform electric field of intensity $$4$$×$$105$$ $$volt/m$$ then what will be its electrical energy in stable equilibrium

Question

Two charges $$+3.2$$×$$10$$−$$19C$$  and −$$3.2$$×$$10$$−$$19C$$  kept  $$2.4A0$$ apart forms a dipole. If it is kept in uniform electric field of intensity  $$4$$×$$105$$ $$volt/m$$ then what will be its electrical energy in stable  equilibrium

Infinity Learn · Accepted Answer

Potential energy of electric $$dipoleU=$$−pEcosθ$$=$$−q×$$2lEcos$$θ  ⇒In stable equilibrium,θ $$=$$ $$0o$$  & $$cos$$θ $$=$$ $$1$$ ⇒$$U=$$−$$3.2$$×$$10$$−$$19$$×$$2.4$$×$$10$$−$$104$$×$$105$$ ⇒$$U=$$−$$3$$×$$10$$−$$23$$ (approx$$.$$).

Two charges $+ 3.2 \times 10^{- 19} C$ and $- 3.2 \times 10^{- 19} C$ kept $2.4 \overset{0}{A}$ apart forms a dipole. If it is kept in uniform electric field of intensity $4 \times 10^{5} v o l t / m$ then what will be its electrical energy in stable equilibrium

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Two charges +3.2×10−19C and −3.2×10−19C kept 2.4A0 apart forms a dipole. If it is kept in uniform electric field of intensity 4×105 volt/m then what will be its electrical energy in stable equilibrium

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Ready to Test Your Skills?

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Two charges $+ 3.2 \times 10^{- 19} C$ and $- 3.2 \times 10^{- 19} C$ kept $2.4 \overset{0}{A}$ apart forms a dipole. If it is kept in uniform electric field of intensity $4 \times 10^{5} v o l t / m$ then what will be its electrical energy in stable equilibrium