hello,
could anyone help with this question?
A 2.5mm square twin copper cable 20m long supplies a heating appliance having three elements each of resistance 57.6 ohms. If the elements are arranged such that two are in series and the third is in parallel with these two, calculate: (a) the resistance of the cable; and (b) the total resistance of the whole circuit. (p for copper is 17 x 10to the power of 6 ohms)?
I know the answers are (a) 0.272 ohms and (b) 38.672 ohms, I am just not sure how to get there, would be grateful for any insight?
thanks
could anyone help with this question?
A 2.5mm square twin copper cable 20m long supplies a heating appliance having three elements each of resistance 57.6 ohms. If the elements are arranged such that two are in series and the third is in parallel with these two, calculate: (a) the resistance of the cable; and (b) the total resistance of the whole circuit. (p for copper is 17 x 10to the power of 6 ohms)?
I know the answers are (a) 0.272 ohms and (b) 38.672 ohms, I am just not sure how to get there, would be grateful for any insight?
thanks