A point charge Q creates an electric potential of +125V at a distance of 15cm. What is Q?

Bevan Mcdonald

Bevan Mcdonald

Answered question

2020-11-09

A point charge Q creates an electric potential of +125V at a distance of 15cm. What is Q?

Answer & Explanation

FieniChoonin

FieniChoonin

Skilled2020-11-10Added 102 answers

The Electric Potential V(r) is defined as V(r)=keQ/r
In this case:
keQ/0.15 m=125 V,
now solve for Q, when ke is constant andequals to 9.0×109
Gives you: Q=2.1×109 C

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