Total resistance of 3 parallel resistive heating strips at 12V

[goan]

I need to work out the total resistance of a heating element made up of 3 strips of resistive material in paralell. We are told that the unit is 12V and theheat is generated at a rate of 40W, I need to calculate the total resistance of the element. I kno I have to use the formula R=v²/r where R is the resistance, V is the voltage and r is the power(watts). i know that the voltage will be the same across all the strips but will the power, could you help me please?

 

[Integral]

The power consumed is porportional to the total circiut resistance.

Thiis is a pretty straight forward problem, don't over think it.

 

[dfx]

Start by drawing off the circuit, that'll help.

 

[Oxygenne]

I need to work out the total resistance of a heating element made up of 3 strips of resistive material in paralell. We are told that the unit is 12V and theheat is generated at a rate of 40W, I need to calculate the total resistance of the element. I kno I have to use the formula R=v²/r where R is the resistance, V is the voltage and r is the power(watts). i know that the voltage will be the same across all the strips but will the power, could you help me please?

R(total)=3.6(ohm)
what is the problem here?

 

[Gamma]

The power consumed is porportional to the total circiut resistance.

Inversely propotional.

 

[goan]

thanks for your help guys