# component of the electric field Ey

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1) Given: V = αx2y2 + βz2(x2 - γ) + δy3z

Where α = 5 V/m4, β = 6.6 V/m4, γ = 3.4 m2, and δ = 5.3 V/m4.

What is the y component of the electric field Ey at (4.6m, -4 m, 4.7 m)? Answer in units of V/m.

2) The electric potential in a certain region is:

V = ax2 + bx + c,

Where a = 10 V/m2, b = -19 V/m, and c = 55 V.

Determine the electric field at x = 3 m. Answer in units of V/m.

https://brainmass.com/physics/electric/component-electric-field-ey-8771

#### Solution Preview

1.)

Electric field in y direction:

Ey = -(dp(V)/dy).j

where, dp(V)/dy = partial derivative of V with respect to y.

because,

V = Ax^2y^2 + Bz^2(x^2-G) + DY^3z

where,

A==alpha = 5 unit, ...

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