Abel observed in his practical lab class that the temperature does not change as long as water boils. Explain this observation giving suitable reasons. b) Phosphorus melts at 44 0 C but lead melts at 325 0 C. Account for this difference in melting points.
c) Ice at 273K is more effective in cooling soft drink bottles than water at 273K. Steam at 373K causes more severe burns than water at 373K.

Lx bxh

Ibelieve that the correct answer is: c. along plate boundaries

Ohm's law tells you that i = v/r where v is equivalent voltage and r is equivalent resistance of the circuit
since all circuits have the same voltage, your question is really asking which circuit has the lowest total resistance, since the lower the resistance, the higher the current
circuit a has a resistance of 5 ohms; circuit c is in series so has a resistance of 10 ohms; circuit b is in parallel and therefore has a resistance of 2.5 ohms (review your notes on adding resistances in parallel and series); therefore b has the highest current

Conductionhope this .