(a) You short-circuit a 9 volt battery by connecting a short wire from one end of the battery to the other end. If the current in the short circuit is measured to be 15 amperes, what is the internal resistance of the battery? (b) What is the power generated by the battery? (c) How much energy is dissipated in the internal resistance every second? (Remember that one watt is one joule per second.)

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Resistivity

Resistivity is a characteristic property of the conductor’s material that measures the extent to which the material opposes the flow of current. It is denoted by the Greek letter “rho”. Electrical resistivity, also known as specific resistance, depends on the nature of the material of the conductor and is unaffected by its dimensions.