1) in which diagram(s) does the ammeter correctly measure the current through th

Question

1) in which diagram(s) does the ammeter correctly measure the current through the battery ?

2) In which diagram is the current through the battery nearly zero?

3) In which diagram(s) does the ammeter correctly measure the current through the resistor with resistance "R" ?

4) In which diagram does the voltmeter correctly measure the terminal voltage of the battery?

5) In which diagram does the voltmeter read almost zero?

6) In which diagram(s) does the ammeter read almost zero?

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Explanation / Answer

Volmeter is added parallel to the component to which we want to know the potential difference. and ammeter is added in series to the component to which we want to know the current. And voltmeter has very high resistance and ammeter has very low resistance. So correct answers are.

D - the voltmeter is hooked up across a section of wire (no resistance means no voltage

A, B : For A, voltmeter is in series with the voltmeter (very high resistance), so it draws almost no current from battery. For B, the ammeter is in series with the voltmeter, so that branch acts like very high resistance.

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