Problem 21.100 Two very large parallel sheets are 5.00 cm apart. Sheet A carries

Question

Problem 21.100 Two very large parallel sheets are 5.00 cm apart. Sheet A carries a uniform surface charge density of -9.70 AC/m2 and sheet B, which is to the right of A, carries a uniform charge of -12.1 AC/m Assume the sheets are large enough to be treated as infinite Part A Find the magnitude of the net electric field these sheets produce at a point 4.00 cm to the right of sheet A. N/C Submit My Answers Give U Part B Find the direction of the net electric field these sheets produce at a point 4.00 cm to the right of sheet A. O net electric field is directed to the right O net electric field is directed to the left Submit My Answers Give Up Part C Find the magnitude of the net electric field these sheets produce at a point 4.00 cm to the left of sheet A. N/C Submit My Answers Give U

Explanation / Answer

Here ,

charge density of A , sigmaA = -9.70 uC/m^2

charge denisty of B , sigmaB = -12.1 uC/m^2

part A)

electric field , Enet = (sigmaA - sigmaB)/(2 *epsilon)

Enet = (12.1 - 9.70) *10^-6 * 0.5/8.854 *10^-12

Enet = 1.355 *10^5 N/C

the magnitude of electric field is 1.355 *10^5 N/C

part B)

the direction of electric field is towards the sheet B ,

the net electric field is towards the right

part c)

on the left of sheet A ,

electric field , Enet = (sigmaA + sigmaB)/(2 *epsilon)

Enet = (12.1 + 9.70) *10^-6 * 0.5/8.854 *10^-12

Enet = 1.795 *10^6 N/C

the magnitude of electric field is 1.795 *10^6 N/C

part d)

net electric field on the point left of sheet A is

to the right

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