A Sensitive Galvanometer Has a Resistance of 180 $\Omega$ And Requires 2

question 97

Multiple Choice

A sensitive galvanometer has a resistance of 180 $\Omega$ and requires 2.40 $\mu$ A of current to produce a full-scale deflection.The series resistance needed to construct a voltmeter that gives full-scale deflection for a potential difference of 10.0 V is approximately

• A)4.17 M\(\Omega\)
• B)180 \(\Omega\)
• C)1.80 k\(\Omega\)
• D)8.33 M\(\Omega\)
• E)2.08 M\(\Omega\)

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Definitions:

Action Potential

A temporary reversal of the electric membrane potential of a cell, especially nerve cells, allowing for the transmission of nerve impulses.

Resting Potential

The electrical potential of a neuron when it is not active, representing the difference in charge between the inside and outside of the cell.

Axon Terminal

Bulbous end of the axon where signals move from the axon of one neuron to the dendrites or cell body of another.

Dendrites

The branched extensions of a neuron that receive signals from other neurons or sensory receptors and convey them toward the cell body.