Answered: T or F: (a) Adding more resistance to a…

College Physics

1st Edition

ISBN:9781938168000

Author:Paul Peter Urone, Roger Hinrichs

Publisher:Paul Peter Urone, Roger Hinrichs

Chapter20: Electric Current, Resistance, And Ohm's Law

Section: Chapter Questions

Problem 14CQ: The power dissipated in a resistor is given by P = V2/R, which means power decreases if resistance...

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T or F: (a) Adding more resistance to a circuit increases its resistance. (b) Removing resistance from a circuit decreases its resistance. Justify your answers with simple examples.

Expert Solution

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The answer to the question depends on the type of circuit.

In series circuit, the resistors are connected in series. Current has only one path to follow. So, it has to flow through all the resistors. This cause increases in the resistance to the flow of current.

In parallel circuit, the resistors are connected in parallel. Current have more than one path to follow. So, more current flow through least resistive resistors. This causes decrease in the resistance to the flow of current.

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