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The Iceberg Kid, infamous for imposing a deep freeze on whoever disagrees with him, discovers that in his advanced teenaged years his hands constantly feel chilled. As he is a cool physics student, the Iceberg Kid quickly calculates the resistance of the resistor needed to warm his hands. Given that 195 J of thermal energy is generated by the resistor during 9.81 s of operation while connected to a 12.0 V battery, find the correct value of this resistance (and avoid a cold, cold fate).

Respuesta :

Answer:

7.24 Ω

Explanation:

Power = energy / time = 195 J / 9.81 = 19.88 W

and power = V² / R

R  resistance = 12 V²  / 19.88 W  = 7.24 Ω

The  correct value of this resistance (and avoid a cold, cold fate) is 7.24 Ω

Calculation of  correct value of this resistance:

Since 195 J of thermal energy is generated by the resistor during 9.81 s of operation while connected to a 12.0 V battery

Now

Power = energy / time

= 195 J / 9.81

= 19.88 W

Also power = V² / R

So,

R  resistance should be

= 12 V²  / 19.88 W

= 7.24 Ω

Learn more about resistance here: https://brainly.com/question/21855556