Resistance and Ohm's Law

The purpose of a resistor is:

• to provide access to the circuit without any breaks in the electrical flow.

• to provide a precise amount of electrical resistance in a circuit.

The following image is a schematic symbol of a resistor:

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T or F: Resistors are necessary for slowing down the flow of electrons.

• True

• False

T or F: When a resistor conducts electric current, its temperature will decrease.

• True

• False

A device that allows current to flow through it in only one direction is known as a:

• Motor

• Switch

• Diode

Ohms law states that

• It's time to end class.

• a standard color code associates each color with a specific decimal digit (0 - 10)

• that current in a circuit is equal to voltage divided by the resistance.

• a resistor conducts electric current.

T or F: Ohms law states that voltage in a circuit is equal to resistance times current.

• True

• False

T or F: Circuit resistance typically decreases due to poor connections,loose connections,corrosion,damaged components

• True

• False

Changing a circuits resistance changes the amount of ____________ flowing through the circuit

• True

• False

• Divided by

• Current

Ohms Law

• I = VR where V=Current and R is resistance

• V=IR, where I =Voltage and R is Current

• R = V/I where V =Voltage and I is resistance

• V=IR, where I =Current and R is resistance