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Obtain the value of electric field due t...

Obtain the value of electric field due to a system of charges.

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If there are a number of stationary charges, the net electric field at a point is the sum of individual electric fiels due to each charge.
`vecE=vecE_1+vecE_2+vecE_3+...+vecE_n`
`vecE_("net")= 1/(4piepsilon_0)`
`[q_1/(r_1^2p)hatr_(1_P)+q_2/(r_2^2p)hatr_(2_P)+q_3/(r_3^2p)hatr_(3_P)+...q_n/(r_n^2p)hatr_(n_P)]`
i.e.,
`vecE_("net")= 1/(4piepsilon_0)[q_1/(r_1^2p)r_(ip)]`
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