Question

what does it mean by the net force on the charge is zero?

Answer 1

it means that the compound or whatever be the thing is neutral ie for eg in NACL Na+ has +tive charge & Cl- has negative charge but as a whole the compound has zero net charge or is neutral

Answer 2

i looked on yahoo lol

Answer 3

Three point charges are arrange on a line. Charge q3= +5 nC and is at the origin. Charge q2= -3 nC and is at x =+4cm. charge q1 is at x= +2 cm. what is q1 (magnitude and sign) if the net force on q3 is zero? can u help me??

Answer 4

\[F_{q_3}=q_3E(0)=0 \rightarrow E(0)=0\]\[E(0)=k \frac{ q_1 }{ x_1^2 }+k \frac{ q_2 }{ x_2^2 }=0\rightarrow q_1=-q_2\left( \frac{ x_1 }{ x_2 } \right)^2 \rightarrow q_1=3·(\frac{ 2 }{ 4 })^2=0.75nC\]