In a series circuit, a common current flows through all the components of the circuit. While in a parallel circuit, a different amount of current flows through each parallel branch of the circuit. Whereas in the parallel circuit, the same voltage exists across the multiple components in the circuit.
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Answer: c
Explanation: because if it increases then it gets hotter
if it decreases then its getting colder.
4 because it’s is the highest one hope it helps
Air is the answer i do believe