What potential difference is needed to accelerate a he+ ion (charge +e, mass 4u) from rest to a speed of 1.8×106 m/s ?

What is required for an electric charge to flow through a wire? zero resistance in the wire a balance of electric potential high resistance in the wire a difference in electric potential

The softest and hardest minerals are: softest hardest

When is a current produced? when the terminals of an electrochemical cell are connected by a wire if the electric circuit is opened in an electrochemical cell if the electrolyte is removed from an electrochemical cell when the electrodes are reversed in an electrochemical cell