A helium-neon laser emits a 1.0 mm diameter laser beam with a power of 1.0 mW. What is the amplitude of the oscillating electric field in the laser beam

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