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# Tentang listrik statis........?

Tiga muatan: A, B, C masing-masing sebesar q, -2q, dan q. Muatan B terletak di tengah-tengah garis hubung antara A dan C adalah r. Berapa besar gaya elektrostatis yang dialami oleh muatan C ?

Begitulah,, soal yang jelek,, membingungkan..!

4 years ago

Member since:
September 05, 2008
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411,269 (Level 7)

Maksudnya, jarak B terhadap A atau C adalah r ? Jika ini maksudnya, maka gaya elektrostatik dititik C akibat muatan di A adalah;

F_CA = kq²/(2r)² = ¼ kq²/r² (ke arah kanan)

dan gaya elektrostatik dititik C akibat muatan di B adalah;

F_CB = k(-2q)q/r² = -2 kq²/r² (ke arah kiri)

Resultannya,

F_C = F_CA + F_CB = ¼ kq²/r² + (-2 kq²/r²)

F_C = -1.75 kq²/r² (ke kiri)
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wah,, tengs ya masu yugi c:

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• Member since:
July 16, 2009
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Walah keduluan Pak Yugi nih....
• 2 people rated this as good