The Figure Shows Variation of the Current Through the Heating

question 54

Multiple Choice

The figure shows variation of the current through the heating element with time in an iron when it is plugged into a standard 120 V,60 Hz outlet.

-What is the peak voltage?

• A)10 V
• B)60 V
• C)120 V
• D)170 V
• E)240 V

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Definitions:

Nerve

Large collection of axons coursing together outside the CNS.

Depolarization

The process in which a cell's membrane potential becomes less negative, moving towards zero, typically initiating nerve impulses or muscle contractions.

Resting Potential

Electrical charge across the insulating cell membrane in the absence of stimulation; a store of potential energy produced by a greater negative charge on the intracellular side relative to the extracellular side.

Hyperpolarization

An increase in a cell's membrane potential, making it more negative and decreasing the likelihood of generating an action potential.