A point charge q is kept at a distance r from an infinitely long straight wire with…
Physics · Class 12 · CBSE — Electric Charges and Fields
A point charge q is kept at a distance r from an infinitely long straight wire with charge density \(\lambda\). The magnitude of the electrostatic force experienced by charge q is:
- Zero
- \(\frac{\mathrm{q} \lambda}{2 \pi \varepsilon_0 \mathrm{r}}\)
- \(\frac{\mathrm{q} \lambda}{4 \pi \varepsilon_0 \mathrm{r}}\)
Answer
(B) q 2 _0 r
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