Two point particles, one with charge +8×10−9 C and the other with charge −2×10−9 C, are separated by 4 m. The electric field midway between them is: 22.5 N/C 9×109 N/C 36×10−9 N/C 13,500 N/C 135,000 N/C
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Two point particles, one with charge and the other with charge , are separated by . The electric field midway between them is:
22.5 N/C