Aresistor rated at 690 kω is connected across two d cell batteries (each 1.50 v) in series, with a total voltage of 3.00 v. the manufacturer advertises that their resistors are within 4% of the rated value. what are the possible minimum current and maximum current through the resistor (in µa)?

The possible minimum current and maximum current through the resistor is 4.53 μA and 4.18 μA

Explanation:

Given that,

Resistance = 690 kΩ

Total voltage = 3.00 V

We need to calculate the maximum resistance

We need to calculate the minimum resistance

We need to calculate the maximum and minimum current

Using ohm's law

For maximum current,

For minimum current,

Hence, The possible minimum current and maximum current through the resistor is 4.53 μA and 4.18 μA

the minimum amperage that the current in this wire would have to have so that its weight is completely supported by the magnetic force due to earth's field, assuming that no other forces except gravity act on it