Dielectric Constant Of Water
Water constitutes about 70% of earth. Some important distinguishing properties of water are high molar concentration, small dissociation constant and high dielectric constant.
Electrostatic Potential and Capacitance
An electrostatic force is a force caused by stationary electric charges /fields. The electrostatic force is caused by the transfer of electrons in conducting materials. Coulomb’s law determines the amount of force between two stationary, charged particles. The electric force is the force which acts between two stationary charges. It is also called Coulomb force.
The figure on the right shows plot of the equipotentials for an arrangement of charges. The numbers represent the potentials (in volts) of each of the equipotential lines. Equipotential lines are shown for potentials beginning at -0.7 V and increasing by 0.3 V up to 1.7 V. There could be equipotential lines for potentials less than -0.7 or greater than 1.7, but these are not shown for clarity.
At which point or points would the electric field be weakest but non-zero?
P Q R S T None
The answer is NOT...
-P,Q
-S,T
-Q,S,T
-P
-P,Q,S
-NONE
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