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 4 A flows through a lamp for 24 s. Calculate the total electric charge transferred using Q = It.
I = 4 A · t = 24 s
2. A steady current of 6 A flows through a lamp for 28 s. Calculate the total electric charge transferred using Q = It.
I = 6 A · t = 28 s
3. A steady current of 15 A flows through a lamp for 33 s. Calculate the total electric charge transferred using Q = It.
I = 15 A · t = 33 s
4. A steady current of 9 A flows through a lamp for 106 s. Calculate the total electric charge transferred using Q = It.
I = 9 A · t = 106 s
5. A steady current of 11 A flows through a lamp for 86 s. Calculate the total electric charge transferred using Q = It.
I = 11 A · t = 86 s
6. A steady current of 8 A flows through a lamp for 28 s. Calculate the total electric charge transferred using Q = It.
I = 8 A · t = 28 s
7. A steady current of 4 A flows through a lamp for 115 s. Calculate the total electric charge transferred using Q = It.
I = 4 A · t = 115 s
8. A steady current of 13 A flows through a lamp for 29 s. Calculate the total electric charge transferred using Q = It.
I = 13 A · t = 29 s
9. A steady current of 5 A flows through a lamp for 38 s. Calculate the total electric charge transferred using Q = It.
I = 5 A · t = 38 s
10. A steady current of 10 A flows through a lamp for 102 s. Calculate the total electric charge transferred using Q = It.
I = 10 A · t = 102 s
11. A steady current of 1 A flows through a lamp for 100 s. Calculate the total electric charge transferred using Q = It.
I = 1 A · t = 100 s
12. A steady current of 9 A flows through a lamp for 41 s. Calculate the total electric charge transferred using Q = It.
I = 9 A · t = 41 s

12 questions · Seed 104730 · 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 4 A flows through a lamp for 24 s. Calculate the total electric charge transferred using Q = It.
96 C
Charge Q = current × time = 4 A × 24 s = 96 C.
2. A steady current of 6 A flows through a lamp for 28 s. Calculate the total electric charge transferred using Q = It.
168 C
Charge Q = current × time = 6 A × 28 s = 168 C.
3. A steady current of 15 A flows through a lamp for 33 s. Calculate the total electric charge transferred using Q = It.
495 C
Charge Q = current × time = 15 A × 33 s = 495 C.
4. A steady current of 9 A flows through a lamp for 106 s. Calculate the total electric charge transferred using Q = It.
954 C
Charge Q = current × time = 9 A × 106 s = 954 C.
5. A steady current of 11 A flows through a lamp for 86 s. Calculate the total electric charge transferred using Q = It.
946 C
Charge Q = current × time = 11 A × 86 s = 946 C.
6. A steady current of 8 A flows through a lamp for 28 s. Calculate the total electric charge transferred using Q = It.
224 C
Charge Q = current × time = 8 A × 28 s = 224 C.
7. A steady current of 4 A flows through a lamp for 115 s. Calculate the total electric charge transferred using Q = It.
460 C
Charge Q = current × time = 4 A × 115 s = 460 C.
8. A steady current of 13 A flows through a lamp for 29 s. Calculate the total electric charge transferred using Q = It.
377 C
Charge Q = current × time = 13 A × 29 s = 377 C.
9. A steady current of 5 A flows through a lamp for 38 s. Calculate the total electric charge transferred using Q = It.
190 C
Charge Q = current × time = 5 A × 38 s = 190 C.
10. A steady current of 10 A flows through a lamp for 102 s. Calculate the total electric charge transferred using Q = It.
1020 C
Charge Q = current × time = 10 A × 102 s = 1020 C.
11. A steady current of 1 A flows through a lamp for 100 s. Calculate the total electric charge transferred using Q = It.
100 C
Charge Q = current × time = 1 A × 100 s = 100 C.
12. A steady current of 9 A flows through a lamp for 41 s. Calculate the total electric charge transferred using Q = It.
369 C
Charge Q = current × time = 9 A × 41 s = 369 C.

12 questions · Seed 104730 · 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 4 A flows through a lamp for 24 s. Calculate the total electric charge transferred using Q = It.
I = 4 A · t = 24 s
2. A steady current of 6 A flows through a lamp for 28 s. Calculate the total electric charge transferred using Q = It.
I = 6 A · t = 28 s
3. A steady current of 15 A flows through a lamp for 33 s. Calculate the total electric charge transferred using Q = It.
I = 15 A · t = 33 s
4. A steady current of 9 A flows through a lamp for 106 s. Calculate the total electric charge transferred using Q = It.
I = 9 A · t = 106 s
5. A steady current of 11 A flows through a lamp for 86 s. Calculate the total electric charge transferred using Q = It.
I = 11 A · t = 86 s
6. A steady current of 8 A flows through a lamp for 28 s. Calculate the total electric charge transferred using Q = It.
I = 8 A · t = 28 s
7. A steady current of 4 A flows through a lamp for 115 s. Calculate the total electric charge transferred using Q = It.
I = 4 A · t = 115 s
8. A steady current of 13 A flows through a lamp for 29 s. Calculate the total electric charge transferred using Q = It.
I = 13 A · t = 29 s
9. A steady current of 5 A flows through a lamp for 38 s. Calculate the total electric charge transferred using Q = It.
I = 5 A · t = 38 s
10. A steady current of 10 A flows through a lamp for 102 s. Calculate the total electric charge transferred using Q = It.
I = 10 A · t = 102 s
11. A steady current of 1 A flows through a lamp for 100 s. Calculate the total electric charge transferred using Q = It.
I = 1 A · t = 100 s
12. A steady current of 9 A flows through a lamp for 41 s. Calculate the total electric charge transferred using Q = It.
I = 9 A · t = 41 s

12 questions · Seed 104730 · 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 4 A flows through a lamp for 24 s. Calculate the total electric charge transferred using Q = It.
96 C
Charge Q = current × time = 4 A × 24 s = 96 C.
2. A steady current of 6 A flows through a lamp for 28 s. Calculate the total electric charge transferred using Q = It.
168 C
Charge Q = current × time = 6 A × 28 s = 168 C.
3. A steady current of 15 A flows through a lamp for 33 s. Calculate the total electric charge transferred using Q = It.
495 C
Charge Q = current × time = 15 A × 33 s = 495 C.
4. A steady current of 9 A flows through a lamp for 106 s. Calculate the total electric charge transferred using Q = It.
954 C
Charge Q = current × time = 9 A × 106 s = 954 C.
5. A steady current of 11 A flows through a lamp for 86 s. Calculate the total electric charge transferred using Q = It.
946 C
Charge Q = current × time = 11 A × 86 s = 946 C.
6. A steady current of 8 A flows through a lamp for 28 s. Calculate the total electric charge transferred using Q = It.
224 C
Charge Q = current × time = 8 A × 28 s = 224 C.
7. A steady current of 4 A flows through a lamp for 115 s. Calculate the total electric charge transferred using Q = It.
460 C
Charge Q = current × time = 4 A × 115 s = 460 C.
8. A steady current of 13 A flows through a lamp for 29 s. Calculate the total electric charge transferred using Q = It.
377 C
Charge Q = current × time = 13 A × 29 s = 377 C.
9. A steady current of 5 A flows through a lamp for 38 s. Calculate the total electric charge transferred using Q = It.
190 C
Charge Q = current × time = 5 A × 38 s = 190 C.
10. A steady current of 10 A flows through a lamp for 102 s. Calculate the total electric charge transferred using Q = It.
1020 C
Charge Q = current × time = 10 A × 102 s = 1020 C.
11. A steady current of 1 A flows through a lamp for 100 s. Calculate the total electric charge transferred using Q = It.
100 C
Charge Q = current × time = 1 A × 100 s = 100 C.
12. A steady current of 9 A flows through a lamp for 41 s. Calculate the total electric charge transferred using Q = It.
369 C
Charge Q = current × time = 9 A × 41 s = 369 C.

12 questions · Seed 104730 · Age guidance, not curriculum certification