The Current Through a Certain Heater Wire Is Found to Be

question 6

Multiple Choice

The current through a certain heater wire is found to be fairly independent of its temperature.If the current through the heater wire is doubled,the amount of energy delivered by the heater in a given time interval will

• A)increase by a factor of two.
• B)decrease by a factor of two.
• C)increase by a factor of four.
• D)decrease by a factor of four.
• E)increase by a factor of eight.

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Definitions:

Imine

A chemical compound characterized by a nitrogen atom double-bonded to a carbon atom, which is also bonded to a hydrogen atom and a side chain.

Butyllithium

A powerful base and nucleophile used in organic synthesis to deprotonate hydrogens or to initiate anionic polymerization processes.

Benzaldehyde

An organic compound characterized by a benzene ring with an aldehyde functional group, known for its almond-like aroma and used in flavoring and perfume.

Methylamine

A simple organic compound with the formula CH3NH2, characterized by a strong ammonia-like odor, used in the production of pesticides and pharmaceuticals.