A Solid Spherical Conductor Has a Radius of 15 Cm $\sigma$

question 37

Multiple Choice

A solid spherical conductor has a radius of 15 cm.The electric field 30 cm from the center of this sphere has a magnitude of 800 N/C.What is the surface charge density $\sigma$ on the sphere?

• A)7.1 \(\times\) 10^-9 C/m²
• B)1.0 \(\times\) 10^-8 C/m²
• C)1.4 \(\times\) 10^-8 C/m²
• D)2.8 \(\times\) 10^-8 C/m²
• E)1.1 \(\times\) 10^-7 C/m²

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