7. A heater in an electric shower has a power of 8.5 kW when connected to a 240 V electrical supply. It is connected to

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7 A Heater In An Electric Shower Has A Power Of 8 5 Kw When Connected To A 240 V Electrical Supply It Is Connected To 1 (67.05 KiB) Viewed 47 times

7. A heater in an electric shower has a power of 8.5 kW when connected to a 240 V electrical supply. It is connected to the electrical supply by a copper cable. The following data are available: Length of cable = 10m Cross-sectional area of cable = 6.0mm² Resistivity of copper (a) (i) Calculate the current in the copper cable. (ii) Calculate the resistance of the cable. (iii) Calculate the power dissipated in the cable. = 1.7 × 10 Ωm [1] [2] [1]