A point of charge of -4.00 nC is at the origin, and a second point of charge of

Question

A point of charge of -4.00 nC is at the origin, and a second point of charge of +6.00 nC is on the x axis at x= 0.800 m. Find the magnitude and direction of the electric field at the following points On the x axis: x= 20cm, x=1.2m, x=-20cm. A point of charge of -4.00 nC is at the origin, and a second point of charge of +6.00 nC is on the x axis at x= 0.800 m. Find the magnitude and direction of the electric field at the following points On the x axis: x= 20cm, x=1.2m, x=-20cm. A point of charge of -4.00 nC is at the origin, and a second point of charge of +6.00 nC is on the x axis at x= 0.800 m. Find the magnitude and direction of the electric field at the following points On the x axis: x= 20cm, x=1.2m, x=-20cm.

Explanation / Answer

A point of charge of -4.00 nC is at the origin, and a second point of charge of +6.00 nC is on the x axis at x= 0.800 m.

the magnitude and direction of the electric field at the following points On the x axis

1. x= 20cm

E = kq/r^2 = k*10^-9( -4/0.2^2 + 6/0.6^2)

E = - 750 N/C    ie. toward -ve x axis direction

2. x=1.2m

E = kq/r^2 = k*10^-9( -4/01.2^2 + 6/0.4^2)

E = 312.5 N/C ie toward +ve x axis

,3. x=-20cm.

E = kq/r^2 = k*10^-9( -4/0.2^2 + 6/1.0^2)

E = -846 N/C   ie towards -ve x axis

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