Question
Questions #4-5: consider the circuit below: 10012 W- E = 10 V 4. A real ammeter...
Questions #4-5: consider the circuit below: 10012 W- E = 10 V 4. A real ammeter with an internal resistance of 1.0 2 is connected to the circuit shown. When the ammeter is properly connected, the power delivered by the battery: a) Decreases b) Increases c) Stays the same d) Depends on how the ammeter is connected 5. A real voltmeter with an internal resistance of 1.0 kN is connected to the circuit shown. When the voltmeter is properly connected, the power delivered by the battery: a) Decreases b) Increases c) Stays the same d) Depends on how the voltmeter is connected 1
Answers
4) when ammeter is properly connected, the effective resistance of the circuit increases and hence the current through the circuit decrease. Now we know that power of batter = V × current,
So If current is decreased, then power of the battery will also DECREASE.
5) when we connect the voltmeter in the circuit, the effective Resistance of the circuit decreases , and hence the current increases which ultimately result in the INCREASE of power of the battery.
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