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This Concept Map, created with IHMC CmapTools, has information related to: Index 3, 4, electrical current is measured by amperes (A), ammeter can only be used when connected in series in a circuit, Ohm's Law where the formulae is R = V/I, Electricity comes out as electrical current, charges namely negative charge, other forms of energy example Light energy, other forms of energy example Sound energy, Electricity can be calculated by the Ohm's Law, Electricity can be changed to other forms of energy, ammeter positive side of ammeter connected to positive terminal of the cell / battery, Electricity is needed for electrical appliances to work, Potential energy such as Gravitational, electrical current is symbolised by I, electical charges which flows from negative to the positive ends, Electricity is a form of Energy, Potential energy such as Chemical, electrical current which flows from positive to the negative ends, other forms of energy example Potential energy, electrical current is measured by milliamperes, other forms of energy example Heat energy