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QJEEM23Ph7aba: JEE Main 2023 Physics - Class 12 JEEM23Ph7aba Solution: Three point charges q , − 2 q and 2 q are placed on -axis at a…

Three point charges q,−2q and 2q are placed on xx -axis at a distance x=0,x=34R and x=R respectively from origin as shown. If q=2×10−6C and R=2 cm, the magnitude of net force experienced by the charge −2q is ___________ N.

JEE Main 2023 (Online) 13th April Evening Shift Physics - Electrostatics Question 65 English

Step-by-Step Verified Solution

FBA=Kq(2q)(34R)2=32Kq29R2 FBC=K(2q)(2q)(R4)2=64Kq2R2 FB=FBC−FBA=544Kq29R2=544×9×109×(2×10−6)29×(2×10−2)2=5440 N

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