Question

A certain voltmeter has an internal resistance of
10,000 12 and a range from 0 to 12V. To extend its
range to 120V, use a series resistance of :-
(1) 1,11122
(2) 90, 000Ω
(3) 100,00022 (4) 108,00022​

Answer 1

Answer:

(4)

Explanation:

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Answer 2

Answer(2) 90,000 Ohm

Explanation:

The key equation is  120 = (R + 10,000) [ 12 / 10 000]

Solving for R gives  R = 90 000    ohms