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These are basic circuit analysis questions and can be used for year 1 introductory classes to circuit analysis.

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A component has 3 A of current flowing through it for 20 seconds.  

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a) The total amount of current that passes through the component is, $Q = I \\times t$. Therefore, $Q = 3 \\times 20 = 60$ C.

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b) The potential difference across the component is, $V = \\frac{W}{Q}$. Therefore, $V = \\frac{120}{60} = 2$ V.

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c) The resistance of the component is, $R =\\frac{V}{I} = \\frac{2}{3} = 0.67 \\Omega$ . 

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What is the total amount of charge, in Coulombs (C), that passes through the component during this time?

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[[0]] C 

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The total work done in moving all the charges that had passed in 20 seconds is 120 J. What is the potential difference across the component in Volts (V)?

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[[0]] V

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What is the resistance of the component in Ohms $\\Omega$? Give your answer to 2 decimal places.

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[[0]]$\\Omega$

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