A charge is fixed in space

PHYSICS · Subjective · A Level · Physics · Fields and their consequences · Fields and their consequences

Problem

A charge

q_{1}=+5.0\,\mu\text{C}

is fixed in space. A second charge

q_{2}

is initially

0.10\,\text{m}

from

q_{1}

. After the charges are released from rest, they separate until the distance between them has doubled. During this motion, the electric potential energy of the two–charge system decreases by

0.75\,\text{J}

. Calculate the value of

q_{2}

Related theory

Coulomb's Law
Electric Force
Electrostatic Potential Energy
Electric Potential
Potential energy of a system of charges
Electrostatic Potential and Capacitance

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