Question

Suppose you measure the terminal voltage of a 1.585V alkaline cell having an internal resistance of 0.100 Ω by placing a 1.00kΩ voltmeter across its terminals. (See figure.)

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What current flows?

A. 1.59 mA

B. 159 mA

C. 1.58 mA

D. 15.9 A

Find the terminal voltage.

A. 1.5850 V (need four digits to see the difference)

B. 1.5852 V

C. 1.5848 V

D. 1.6850 V

To see how close the measured terminal voltage is to the emf, calculate their ratio.

A. 0.94065

B. 0.99987

C. 0.99990

D. 1.00000

Answer 1

lknn - 5&S vollmeler