All the statements are correct for the strength of electric field.
The amount of charge on the source and the distances from the source charge both affect how strong the electric field is.
All the statements are true as
The electric force varies directly with charge therefore , statement 2 is correct
The electric force varies indirectly with the distance between the electric field , Therefore statement 1 is correct.
It is known that Oppositely charged objects will attract each other , Statement 3 is correct.
Therefore all the statements are correct for the strength of electric field.
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