A Galvanometer Has an Internal Resistance of 100 Ω and Deflects

question 13

Multiple Choice

A galvanometer has an internal resistance of 100 Ω and deflects full-scale at a current of 2.00 mA.What size resistor should be added to it to convert it to a millivoltmeter capable of reading up to 400 mV,and how should this resistor be connected to the galvanometer?

• A) 50.0 Ω in series with the galvanometer
• B) 50.0 Ω in parallel with the galvanometer
• C) 75.0 Ω in parallel with the galvanometer
• D) 100 Ω in series with the galvanometer
• E) 100 Ω in parallel with the galvanometer

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Definitions:

Depreciation Method

A systematic approach used to allocate the cost of a tangible asset over its useful life.

Double Declining-Balance

An accelerated method of depreciation which doubles the normal depreciation rate, reducing the value of an asset more quickly in its early years.

Straight-Line Method

A technique for calculating an asset's depreciation by uniformly distributing its cost throughout its anticipated lifespan.

Residual Value

Residual value is the estimated value of an asset at the end of its useful life.