On your first day at work as an electrical technician, you are asked to determine the resistance per meter of a long piece of wire. the company you work for is poorly equipped. you find a battery, a voltmeter, and an ammeter, but no meter for directly measuring resistance (an ohmmeter). you put the leads from the voltmeter across the terminals of the battery, and the meter reads 13.0 v . you cut off a 20.0-m length of wire and connect it to the battery, with an ammeter in series with it to measure the current in the wire. the ammeter reads 7.00 a . you then cut off a 40.0-m length of wire and connect it to the battery, again with the ammeter in series to measure the current. the ammeter reads 4.40 a . even though the equipment you have available to you is limited, your boss assures you of its high quality: the ammeter has very small resistance, and the voltmeter has very large resistance.
what is the resistance of 1 meter of wire?