75 km 32 μm
12 ns
4,2 mA
9,6 mg
500 us
I need you to tell me how to calculate it scientifically and the answer of this number

A10nc charge sits at a point in space where the magnitude of the electric field is 1500 n/c. what will the magnitude of the field be if the 10 nc charge is replaced by a 20 nc charge? assume the system is big enough to consider the charges as small test charges.