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4 years ago

6

I don't understand how to get 50000 ohms, please can someone help? I would have just left my answer at 25,000 ohms!

1 answer:

pochemuha4 years ago

8 0

I think this is shown in the fine print on the second sheet . . .

The question starts out by saying that the scale uses <u>two</u> 3V cells <u>in series</u>.
That makes the total battery voltage 6 volts.

0.12 milliamperes = 0.00012 Amperes.

Resistance = (voltage) / (current in Amperes).

Resistance = 6 / 0.00012 = 50,000 Ω

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