Answer:
the electric field strength of this charge is two times the strength of the other charge
Explanation:
Using the relationship between electric field and the charge, which is inversely proportionality. Let the the magnitude of the first charge be Q and the respective electric field be E. It implies that;
E1/E2 = Q2/Q1
E2 = E1 x Q1/Q2
= E x Q/ (Q/2)
= 2E
The answer would be B.
(V=IR, 12-10i, 12/10=1.2)
The kinetic energy (KE) is 250 J and the gravitational potential energy (GPE) is 392 J