Question

three point charges q, 2q and -4q are arranged in an equilateral triangle of side 30 cm if q is equal to 3*10^-7 C, then calculate the potential energy of the system?

Answer 1

Answer:

• k(q+2q-4q)÷30×10power-2
• 9×10power9×3×10power-7×1+2-4
• 27×10power2×-1
• -2700J