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Electricity quick check

A quick check of 3 questions. After you submit, each question shows the right answer and why.

3 of 9 questions, Advanced level. Aimed at the Advanced level, your current depth. Questions you have not answered yet come first.

Show all 9 questions

ScientistQuestion 1 of 3

A 12 V lamp draws a current of 2 A. At what rate does it transfer energy, in watts?

AdvancedQuestion 2 of 3

What is the equivalent resistance, in ohms to two decimal places, of a 100 Ω resistor and a 220 Ω resistor connected in parallel?

AdvancedQuestion 3 of 3

Using the exact SI value e = 1.602176634 × 10⁻¹⁹ C, how many elementary charges pass a point each second in a current of 2 A? Give the answer in units of 10¹⁸, to two decimal places.