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The meter on the battery charger shows the current supplied to a battery - Edexcel - GCSE Physics Combined Science - Question 3 - 2020 - Paper 1

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The meter on the battery charger shows the current supplied to a battery. The meter on the battery charger is A an ammeter B an ohmmeter C a voltmeter D a wattm... show full transcript

Worked Solution & Example Answer:The meter on the battery charger shows the current supplied to a battery - Edexcel - GCSE Physics Combined Science - Question 3 - 2020 - Paper 1

Step 1

The meter on the battery charger is

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Answer

The correct answer is A, an ammeter. An ammeter is used to measure the current flowing in a circuit, which is exactly what the meter on the battery charger does.

Step 2

Calculate the charge supplied to the battery in 5 minutes.

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Answer

To calculate the charge, we use the formula:

Q=IimestQ = I imes t

where:

  • QQ is the charge in coulombs (C)
  • II is the current in amperes (A)
  • tt is the time in seconds (s)

Given that the current I=2.5extAI = 2.5 ext{ A} and the time t=5extminutes=5imes60exts=300extst = 5 ext{ minutes} = 5 imes 60 ext{ s} = 300 ext{ s}, we can substitute these values into the formula:

Q=2.5imes300=750extCQ = 2.5 imes 300 = 750 ext{ C}

Thus, the charge supplied to the battery in 5 minutes is 750 coulombs.

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