The wattage rating of an appliance is given as W, in watts, and varies jointly as the resistance, R, in ohms, and as the square of the current, I, in amperes. If the wattage is 90 watts when the resistance is 250 ohms and the current is 0.6 amperes, find the wattage when the resistance is 300 ohms and the current is 0.2 amperes.
A. 18,000 watts
B. 120 watts
C. 12 watts
D. 60 watts

12 W

Step-by-step explanation:

Taking first case to establish the value of k

Substituting W with 90,  I with 0.6 and R with 250 then

Now when resistance is 300 and current 0.2 then

step-by-step explanation:

fahrenheit

step-by-step explanation:

fahrenheit is more precise than celsius. the ambient temperature on most of the inhabited world ranges from -20 degrees fahrenheit to 110 degrees fahrenheit—a 130-degree range. on the celsius scale, that range is from -28.8 degrees to 43.3 degrees—a 72.1-degree range. this means that you can get a more exact measurement of the air temperature using fahrenheit because it uses almost twice the scale.