20. A voltmeter is connected to the (+) and (-)
terminals of a battery and measures 6.0 V. If
the lead on the ( - ) terminal is removed and
now touches the (+) terminal, what would
now be the reading on the meter? Explain
your answer.

The ammeter is connected in series with the circuit. So its reading will show the value of the current flowing in the circuit. Hence, the reading of the ammeter is equal to 1A. Hence, the voltmeter will show a reading of 2V.

Explanation:voltmeter, instrument that measures voltages of either direct or alternating electric current on a scale usually graduated in volts, millivolts (0.001 volt), or kilovolts (1,000 volts).

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20. A voltmeter is connected to the (+) and (-) terminals of a battery and measures 6.0 V. If the lead on the ( - ) terminal is removed and now touches the (+) terminal, what would now be the reading on the meter? Explain your answer.

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20. A voltmeter is connected to the (+) and (-)
terminals of a battery and measures 6.0 V. If
the lead on the ( - ) terminal is removed and
now touches the (+) terminal, what would
now be the reading on the meter? Explain
your answer.