ScienceAges 16-18

Electric charge & current (Q = It)

Use Q = It to calculate electric charge in coulombs from steady current and time. Review suitability for your learners before teaching.

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Age band:Ages 13-15 Ages 16-18

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Worksheet StudioPractice pack · Ages 16-18

Electric charge & current (Q = It)

Take your time. Show your thinking.

1. A steady current of 10 A flows through a lamp for 69 s. Calculate the total electric charge transferred using Q = It.
I = 10 A · t = 69 s
2. A steady current of 6 A flows through a lamp for 112 s. Calculate the total electric charge transferred using Q = It.
I = 6 A · t = 112 s
3. A steady current of 5 A flows through a lamp for 72 s. Calculate the total electric charge transferred using Q = It.
I = 5 A · t = 72 s
4. A steady current of 13 A flows through a lamp for 21 s. Calculate the total electric charge transferred using Q = It.
I = 13 A · t = 21 s
5. A steady current of 3 A flows through a lamp for 64 s. Calculate the total electric charge transferred using Q = It.
I = 3 A · t = 64 s
6. A steady current of 6 A flows through a lamp for 86 s. Calculate the total electric charge transferred using Q = It.
I = 6 A · t = 86 s
7. A steady current of 3 A flows through a lamp for 42 s. Calculate the total electric charge transferred using Q = It.
I = 3 A · t = 42 s
8. A steady current of 14 A flows through a lamp for 40 s. Calculate the total electric charge transferred using Q = It.
I = 14 A · t = 40 s
9. A steady current of 12 A flows through a lamp for 33 s. Calculate the total electric charge transferred using Q = It.
I = 12 A · t = 33 s
10. A steady current of 5 A flows through a lamp for 94 s. Calculate the total electric charge transferred using Q = It.
I = 5 A · t = 94 s
11. A steady current of 1 A flows through a lamp for 28 s. Calculate the total electric charge transferred using Q = It.
I = 1 A · t = 28 s
12. A steady current of 3 A flows through a lamp for 28 s. Calculate the total electric charge transferred using Q = It.
I = 3 A · t = 28 s

12 questions · Seed 104738 · Age guidance, not curriculum certification

View the answer key

Worksheet StudioAnswer key · Ages 16-18

Electric charge & current (Q = It)

Answers and reasoning. Review before teaching.

1. A steady current of 10 A flows through a lamp for 69 s. Calculate the total electric charge transferred using Q = It.
690 C
Charge Q = current × time = 10 A × 69 s = 690 C.
2. A steady current of 6 A flows through a lamp for 112 s. Calculate the total electric charge transferred using Q = It.
672 C
Charge Q = current × time = 6 A × 112 s = 672 C.
3. A steady current of 5 A flows through a lamp for 72 s. Calculate the total electric charge transferred using Q = It.
360 C
Charge Q = current × time = 5 A × 72 s = 360 C.
4. A steady current of 13 A flows through a lamp for 21 s. Calculate the total electric charge transferred using Q = It.
273 C
Charge Q = current × time = 13 A × 21 s = 273 C.
5. A steady current of 3 A flows through a lamp for 64 s. Calculate the total electric charge transferred using Q = It.
192 C
Charge Q = current × time = 3 A × 64 s = 192 C.
6. A steady current of 6 A flows through a lamp for 86 s. Calculate the total electric charge transferred using Q = It.
516 C
Charge Q = current × time = 6 A × 86 s = 516 C.
7. A steady current of 3 A flows through a lamp for 42 s. Calculate the total electric charge transferred using Q = It.
126 C
Charge Q = current × time = 3 A × 42 s = 126 C.
8. A steady current of 14 A flows through a lamp for 40 s. Calculate the total electric charge transferred using Q = It.
560 C
Charge Q = current × time = 14 A × 40 s = 560 C.
9. A steady current of 12 A flows through a lamp for 33 s. Calculate the total electric charge transferred using Q = It.
396 C
Charge Q = current × time = 12 A × 33 s = 396 C.
10. A steady current of 5 A flows through a lamp for 94 s. Calculate the total electric charge transferred using Q = It.
470 C
Charge Q = current × time = 5 A × 94 s = 470 C.
11. A steady current of 1 A flows through a lamp for 28 s. Calculate the total electric charge transferred using Q = It.
28 C
Charge Q = current × time = 1 A × 28 s = 28 C.
12. A steady current of 3 A flows through a lamp for 28 s. Calculate the total electric charge transferred using Q = It.
84 C
Charge Q = current × time = 3 A × 28 s = 84 C.

12 questions · Seed 104738 · Age guidance, not curriculum certification

Worksheet StudioPractice pack · Ages 16-18

Electric charge & current (Q = It)

Take your time. Show your thinking.

1. A steady current of 10 A flows through a lamp for 69 s. Calculate the total electric charge transferred using Q = It.
I = 10 A · t = 69 s
2. A steady current of 6 A flows through a lamp for 112 s. Calculate the total electric charge transferred using Q = It.
I = 6 A · t = 112 s
3. A steady current of 5 A flows through a lamp for 72 s. Calculate the total electric charge transferred using Q = It.
I = 5 A · t = 72 s
4. A steady current of 13 A flows through a lamp for 21 s. Calculate the total electric charge transferred using Q = It.
I = 13 A · t = 21 s
5. A steady current of 3 A flows through a lamp for 64 s. Calculate the total electric charge transferred using Q = It.
I = 3 A · t = 64 s
6. A steady current of 6 A flows through a lamp for 86 s. Calculate the total electric charge transferred using Q = It.
I = 6 A · t = 86 s
7. A steady current of 3 A flows through a lamp for 42 s. Calculate the total electric charge transferred using Q = It.
I = 3 A · t = 42 s
8. A steady current of 14 A flows through a lamp for 40 s. Calculate the total electric charge transferred using Q = It.
I = 14 A · t = 40 s
9. A steady current of 12 A flows through a lamp for 33 s. Calculate the total electric charge transferred using Q = It.
I = 12 A · t = 33 s
10. A steady current of 5 A flows through a lamp for 94 s. Calculate the total electric charge transferred using Q = It.
I = 5 A · t = 94 s
11. A steady current of 1 A flows through a lamp for 28 s. Calculate the total electric charge transferred using Q = It.
I = 1 A · t = 28 s
12. A steady current of 3 A flows through a lamp for 28 s. Calculate the total electric charge transferred using Q = It.
I = 3 A · t = 28 s

12 questions · Seed 104738 · Age guidance, not curriculum certification

Worksheet StudioAnswer key · Ages 16-18

Electric charge & current (Q = It)

Answers and reasoning. Review before teaching.

1. A steady current of 10 A flows through a lamp for 69 s. Calculate the total electric charge transferred using Q = It.
690 C
Charge Q = current × time = 10 A × 69 s = 690 C.
2. A steady current of 6 A flows through a lamp for 112 s. Calculate the total electric charge transferred using Q = It.
672 C
Charge Q = current × time = 6 A × 112 s = 672 C.
3. A steady current of 5 A flows through a lamp for 72 s. Calculate the total electric charge transferred using Q = It.
360 C
Charge Q = current × time = 5 A × 72 s = 360 C.
4. A steady current of 13 A flows through a lamp for 21 s. Calculate the total electric charge transferred using Q = It.
273 C
Charge Q = current × time = 13 A × 21 s = 273 C.
5. A steady current of 3 A flows through a lamp for 64 s. Calculate the total electric charge transferred using Q = It.
192 C
Charge Q = current × time = 3 A × 64 s = 192 C.
6. A steady current of 6 A flows through a lamp for 86 s. Calculate the total electric charge transferred using Q = It.
516 C
Charge Q = current × time = 6 A × 86 s = 516 C.
7. A steady current of 3 A flows through a lamp for 42 s. Calculate the total electric charge transferred using Q = It.
126 C
Charge Q = current × time = 3 A × 42 s = 126 C.
8. A steady current of 14 A flows through a lamp for 40 s. Calculate the total electric charge transferred using Q = It.
560 C
Charge Q = current × time = 14 A × 40 s = 560 C.
9. A steady current of 12 A flows through a lamp for 33 s. Calculate the total electric charge transferred using Q = It.
396 C
Charge Q = current × time = 12 A × 33 s = 396 C.
10. A steady current of 5 A flows through a lamp for 94 s. Calculate the total electric charge transferred using Q = It.
470 C
Charge Q = current × time = 5 A × 94 s = 470 C.
11. A steady current of 1 A flows through a lamp for 28 s. Calculate the total electric charge transferred using Q = It.
28 C
Charge Q = current × time = 1 A × 28 s = 28 C.
12. A steady current of 3 A flows through a lamp for 28 s. Calculate the total electric charge transferred using Q = It.
84 C
Charge Q = current × time = 3 A × 28 s = 84 C.

12 questions · Seed 104738 · Age guidance, not curriculum certification