The Current Is Zero in a Conductor When No Potential

question 38

Multiple Choice

The current is zero in a conductor when no potential difference is applied because:

• A)the electrons are not moving
• B)the electrons are not moving fast enough
• C)for every electron with a given velocity there is another with a velocity of equal magnitude and opposite direction
• D)equal numbers of electrons and protons are moving together
• E)otherwise Ohm's law would not be valid

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Definitions:

Lower Reaches

The downstream part of a river close to its mouth where it meets a larger body of water.

Aquifer

An underground layer of water-bearing permeable rock, rock fractures or unconsolidated materials (gravel, sand, or silt) that can yield significant quantities of water.

Well

A deep hole drilled or dug into the ground to access water, oil, gas, or other underground resources.

Urban Developments

The process of developing areas for residential, commercial, or industrial use within cities or towns.