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Find the radius of the incircle of the equilateral triangle having each side 12 cm

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Knowledge Check

  • Electric charges of 1muC-1muC and 2muC are placed in air at the corners A, B and C respectively of an equilateral triangle ABC having length of each side 10cm. The resultant force on the charge at C is

    A
    0.9N
    B
    1.8N
    C
    2.7N
    D
    3.6N

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