A Tube of Mercury with Resistivity 9

question 87

Multiple Choice

A tube of mercury with resistivity 9.84 × 10^-7 Ω ∙ m has a uniform electric field of 23 N/C inside the mercury.How much current is flowing in the tube,if the radius of the tube is 0.495 mm?

• A)18 A
• B)180 A
• C)29 A
• D)280 A

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Definitions:

Static Training

An exercise method focusing on holding a position or muscle contraction for a period of time without movement to improve strength and endurance.

Dynamic Training

A form of exercise that involves moving parts of the body through their full range of motion with or without weights.

Concentric Contraction

A type of muscle contraction where the muscle shortens while generating force, typically the upward movement in a bicep curl.

Muscle Strength

The ability of a muscle or group of muscles to exert force against resistance.