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Mathematics, 15.07.2020 02:01 spiritcampbell56
Determine the length and conductivity of a wire with diameter 4.2 mm constructed from an alloy of resistivity 3.2 x 10^-8 ohms-meter, if its resistance is 0.8 0hms. [Take pie = 22/7]. (b) A battery of emf 12.0 V and internal resistance 0.5 is connected to 1.5 and 4.0 series resistors. Calculate the terminal voltage of the battery. (c) A lamp marked 100 W, 250 V is lit for 10 hours. if it operates normally and 1 kWh of electrical energy cost ₦2, what is the cost of lighting the lamp
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