A Thin, Circular Disk of Radius R = 30 Cm

question 70

Multiple Choice

A thin, circular disk of radius R = 30 cm is oriented in the yz-plane with its center as the origin. The disk carries a total charge Q = +3 μC distributed uniformly over its surface. Calculate the magnitude of the electric field due to the disk at the point x = 15 cm along the x-axis.

• A)9.95 × 10⁵ N/C
• B)4.98 × 10⁵ N/C
• C)3.32 × 10⁵ N/C
• D)2.49 × 10⁵ N/C
• E)1.99 × 10⁵ N/C

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