An unknown point charge Q is placed 1.66 m from a proton. The proton then starts to accelerate at 5.37 m/s2 away from Q. What is the electric field E at the proton’s initial position (in N/C; use positive sign ifE points toward Q, and negative sign if E points away from Q)?

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Electric Charges and Fields

One of the fundamental properties is the electromagnetic property. Charge cannot be destroyed by any process and this contributes formally to the law of charge conservation.