QJEEM22Phb05f: JEE Main 2022 Physics - Class 12 JEEM22Phb05f Solution: Two point charges A and B of magnitude +8 × 10 − 6 C and − 8 ×…

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QJEEM22Phb05f: JEE Main 2022 Physics - Class 12 JEEM22Phb05f Solution: Two point charges A and B of magnitude +8 × 10 − 6 C and − 8 ×…

Two point charges A and B of magnitude +8 $\times$ 10^{$-$ 6} C and $-$ 8 $\times$ 10^{$-$ 6} C respectively are placed at a distance d apart. The electric field at the middle point O between the charges is 6.4 $\times$ 10⁴ NC^{$-$ 1}. The distance 'd' between the point charges A and B is :

Multiple Choice Options

A 2.0 m
B 3.0 m
C 1.0 m
D 4.0 m

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Accepted Answer

JEE Main 2022 (Online) 28th June Evening Shift Physics - Electrostatics Question 109 English Explanation

Electric field at P will be

$E = \frac{k q}{{(d / 2)}^{2}} \times 2 = \frac{8 k q}{d^{2}}$

So, $\frac{8 \times 9 \times 10^{9} \times 8 \times 10^{- 6}}{d^{2}} = 6.4 \times 10^{4}$

So, $d = 3$ m

QJEEM22Phb05f: JEE Main 2022 Physics - Class 12 JEEM22Phb05f Solution: Two point charges A and B of magnitude +8 × 10 − 6 C and − 8 ×…

Multiple Choice Options

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