Question

What is the ratio of the total effective resistance of the circuit is series combination and
parallel combination? How the resistance depends on temperature ?
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Answer 1

Answer:

• 1/rp=1/r1+1/r2+1/r3.... If n resistor, each of resistance R are connected in series and then in parallel. Ratio S/P = n^2 ( n×n).
• Since the resistance of some conductor, such as a piece of wire, depends on collisions within the wire itself, the resistance depends on temperature. With increasing temperature, the resistance of the wire increases as collisions within the wire increase and "slow" the flow of current.