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Calculate the charge flow when a current of 20mA flows for 2000s - OCR Gateway - GCSE Physics - Question 12 - 2020 - Paper 1

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Calculate the charge flow when a current of 20mA flows for 2000s. Use the equation: charge flow = current × time A 40 C B 100 C C 40000 C D 100000 C Your answ... show full transcript

Worked Solution & Example Answer:Calculate the charge flow when a current of 20mA flows for 2000s - OCR Gateway - GCSE Physics - Question 12 - 2020 - Paper 1

Step 1

Calculate the charge flow

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Answer

To find the charge flow, we use the equation:

extChargeflow=extCurrentimesextTime ext{Charge flow} = ext{Current} imes ext{Time}

First, we need to convert the current from milliamperes (mA) to amperes (A):

Given:

  • Current = 20 mA = 0.020 A
  • Time = 2000 s

Now, substituting the values into the equation:

extChargeflow=0.020extAimes2000exts=40extC ext{Charge flow} = 0.020 ext{ A} imes 2000 ext{ s} = 40 ext{ C}

Thus, the charge flow is 40 Coulombs.

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