At a Distance $d$ From a Point Charge $Q$ , the Energy Density in Its Electric Field Is

question 78

Multiple Choice

At a distance $d$ from a point charge $Q$ , the energy density in its electric field is $u$ . If we now go to a distance $d / 2$ from the charge, what is the energy density at the new location?

• A) \(8 u\)
• B) \(16 u\)
• C) \(4 u\)
• D) \(2 u\)
• E) \(u \sqrt { 2 }\)