Figure shows a positively charged infinite wire. A particle of charge 2C moves from point A to B with constant speed. (Given linear charge density

Q: Figure shows a positively charged infinite wire. $A$ particle of charge $2C$ moves from point $A$ to $B$ with constant speed. (Given linear charge density on wire is $\lambda = 4 \pi \varepsilon_0$)

a $\mathrm{E}=\frac{2 \mathrm{K} \lambda}{\mathrm{r}} \quad ; \mathrm{V}=-\int_{\infty}^{\mathrm{r}} \overrightarrow{\mathrm{E}} \cdot \mathrm{dr}$ ${{\rm{V}}_{\rm{B}}} - {{\rm{V}}_{\rm{A}}} = - \int_2^1 {\overrightarrow {\rm{E}} } \cdot \overrightarrow {{\rm{dr}}} = - \left. {2{\rm{k}}\lambda \cdot \ell nr} \right|_2^1 = 2{\rm{k}}\lambda \cdot \ell n2$

SECTION - A [PHYSICS - MCQ]

GSEB - English Medium

Figure shows a positively charged infinite wire. $A$ particle of charge $2C$ moves from point $A$ to $B$ with constant speed. (Given linear charge density on wire is $\lambda = 4 \pi \varepsilon_0$)

Awork done by external agent $= 4\, ln2$
Bwork done by electric force $= -2\, ln\, 2$
Cwork done by electric force $= 4\, ln \,2$
D$V_A-V_B = 2\, ln\, 2$

Medium

STD 11 Science
NEET
STD 12 - 2. Electric potential and capacitance
Physics

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