A resistor rated at 275k Ω 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 5% of the rated value. What are the possible minimum current and maximum current through the resistor?.

The possible minimum current is:

the possible maximum current is:

Explanation:

In this circuit the voltage across the resistor is the voltage the batteries provide it (3.00 V), due Ohm's law current (I), voltage (V) and resistance are related by:

so current is:

(1)

Now if we know a resistor is rated are 275k but with 5% of uncertainty, the real value is between:

Ω

and

Ω

This is between 261.25kΩ and 288.75kΩ, those are the minimum and maximum possible values of the resistance respectively. So, using those values on (1) we can find maximum and minimum possible value of current:

answer: the exterior temperature of commercial jet planes as they leave the stratosphere and return to the ground increases steadily.

explanation:

the lower most layer of atmosphere is troposphere which extends from 0 to 12 km above the surface of the earth. the temperature initially decreases as distance is increased from the earth's surface. commercial jets fly in lower part of the stratosphere. the stratosphere extends upto 50 km. the temperature in stratosphere starts rising again due to presence of ozone which traps the uv rays.

thus, when the planes leave the stratosphere and return to the ground, the exterior temperature increases steadily.