The voltage of the silver oxide battery in the electronic watch is 15V, and the working current through the electronic watch is about 1.5 times 10 to the minus 3 Ma, How to find the resistance of electronic watch?

The voltage of the silver oxide battery in the electronic watch is 15V, and the working current through the electronic watch is about 1.5 times 10 to the minus 3 Ma, How to find the resistance of electronic watch?

The battery voltage of electronic watch should be 1.5V
Current 1.5 × 10-3 = 0.0015ma
Resistance 1.5 △ 0.00015 = 1000K Ω = 1m Ω
Therefore, the resistance of the electronic meter is 1 megohm

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