Acircuit similar to the one you will be measuring has a current of 0.1 a flowing when the voltage is 2.5 v. what is the measured value of the resistance? what color code does the resistor probably have? (see reading resistor codes' on page 1 of this lab to answer this question; assume the uncertainty is 5%.) what is the current when the voltage is reduced to 1 volts? what is the lowest and highest value of resistance a brown-red-brown resistor would usually have if it has a silver tolerance band?

The heater element of a 120 v toaster is a 5.4 m length of nichrome wire, whose diameter is 0.48 mm. the resistivity of nichrome at the operating temperature of the toaster is 1.3 × 10-6 ω·m. the toaster is operated at a voltage of 120 v. (a) what is the power drawn by the toaster? (b) if the cost of electricity is 12 ¢ per kilowatt-hour, and it takes 2 minutes to toast bread, how much does it cost for toasted bread? (c) when the heater element is at room temperature, is the resistivity in the nichrome wire greater than, less than, or equal to it’s resistivity when at operating temperature? explain.