CHAMPVA is a Department of Veterans Affairs program; TRICARE is a regionally managed health care program for active duty and retired members of the uniformed services, their families, and survivors. In some cases a Veteran may appear to be eligible for both/either program on paper.
Quick Answer. Michael Faraday discovered the law of electromagnetic induction in 1831. He realized that current in a circuit can be induced by changing the magnetic field. Faraday tested it by wrapping a paper cylinder with a wire and connecting the coil to a galvanometer. Faraday then moved the magnet back and forth inside the cylinder.
Ph Ch 11 Define electromagnetic induction. the induction of voltage when a magnetic field changes w/ time. Ph Ch 11 Define faraday's law. the law of electromagnetic induction, where the induced voltage in a coil is proportional to the number of loops, multiplied by the rate at which the magnetic field changes w/in those loops.