Two Long Parallel Wires Carry Currents of 20 a and 5.0

question 50

Multiple Choice

Two long parallel wires carry currents of 20 A and 5.0 A in opposite directions.The wires are separated by 20 cm.At what point between the two wires do they produce the same strength magnetic field?

• A)4.0 cm from the 20 A wire
• B)8.0 cm from the 20 A wire
• C)12 cm from the 20 A wire
• D)16 cm from the 20 A wire
• E)18 cm from the 20 A wire

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Definitions:

Dermal Gills

Respiratory structures in some aquatic animals that allow for gas exchange directly through the skin.

Book Lungs

Respiratory organs in certain arachnids, such as spiders and scorpions, consisting of stacked plates for gas exchange.

Operculum

In bony fishes, a protective flap of the body wall that covers the gills.

Swim Bladders

Gas-filled sacs in fish that help maintain buoyancy in the water column.