7. A conducting wire has a cross-sectional area of ​​2 mm² and a specific resistance of 5x10 m. designed for a heater with a power of 1200 Watt, operating at different potential 220 V. Determine a....

7. A conducting wire has a cross-sectional area of ​​2 mm² and a specific resistance of 5x10 m. designed for a heater with a power of 1200 Watt, operating at different

potential 220 V. Determine

a. Required wire length (L.)

b. Large current on the wire

c. Electrical energy is transferred into thermal energy within 15 minutes d. What is the power of the stove if the length of the wire is half the length in problem a (1/2)