A test charge of -1.4 × 10-7 coulombs experiences a force of 5.4 × 10-1 newtons. Calculate the magnitude of the electric field created by the negative test charge.

I have multi choice
1.4 × 106 newtons/coulomb
1.9 × 106 newtons/coulomb
5.4 × 10-1 newtons/coulomb
3.6 × 106 newtons/coulomb

Question

A test charge of -1.4 × 10-7 coulombs experiences a force of 5.4 × 10-1 newtons. Calculate the magnitude of the electric field created by the negative test charge.

I have multi choice
1.4 × 106 newtons/coulomb
1.9 × 106 newtons/coulomb
5.4 × 10-1 newtons/coulomb
3.6 × 106 newtons/coulomb

anonymous · Answer

nvm I got it, it is .53999986, 
Or 5.4 x 10^-1 (C)

I used electric field strength=force/charge
Or E=F/q