Some insight into resistors

Question

I am taking an engineering physics class and we have been covering all kind of circuits...RC, RLC, etc..... but one thing that I want to know is: What is the resistor's job in a circuit? Does it regulate voltage? I know that a higher resistance means a lower current flow, but why does it make your voltage go up? I'm thinking in terms of Ohm's law here. Thank you for the time.

Answer 1

From its name, resistor... it resists current flow?

I'm not so sure about this but from my electronics class.. and based on Ohm's law..

since the voltage is directly proportional to the resistance ...then it can be noted that when the resistance increases, the voltage also increases.

Answer 2

Ohms law tells it all.

Regulate voltage? no

Read up on ohms law and on parallel and series circuits.

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Answer 3

A Resistor resists current flow.

It is instrumental in providing a Resistive Bridge which provides a means of a Voltage Divider or Voltage Reference for a circuit.

A Resistor can Limit the amount of current flow in a circuit providing protection to the input of an Active Device such as a Xsistor or Operation Amplifier.

A Wheastone Bridge was a fundamental concept in metering. When the four branches are in balance, the Meter is at Zero, center, if any one branch was different the meter would deflect from zero. The Resistor is the fundamental component of the Bridge.

The voltage across a resistor is described as V = I x R and can never be greater than the voltage source.