Question

Deutron and $\alpha -$particle are put $1Å$ apart in air. Magnitude of intensity of electric field due to deutron at $\alpha -$particle is

• A. Zero
• B. $2.88 \times 10^{11}newton/coulomb$
• C. $1.44 \times 10^{11}newton/coulomb$
• D. $5.76 \times 10^{11}newton/coulomb$

Answer 1

Answer: (C)

$1.44 \times 10^{11}newton/coulomb$

Answer 2

Due to deutron, intensity of electric field at 1 Å distance,

$E = \frac{1}{4\pi\varepsilon_{0}}.\frac{e}{r^{2}} = \frac{9 \times 10^{9} \times 1.6 \times 10^{- 19}}{10^{- 20}} = 1.44 \times 10^{11}N/C.$