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 14 A flows through a lamp for 26 s. Calculate the total electric charge transferred using Q = It.
I = 14 A · t = 26 s
2. A steady current of 12 A flows through a lamp for 53 s. Calculate the total electric charge transferred using Q = It.
I = 12 A · t = 53 s
3. A steady current of 4 A flows through a lamp for 59 s. Calculate the total electric charge transferred using Q = It.
I = 4 A · t = 59 s
4. A steady current of 15 A flows through a lamp for 34 s. Calculate the total electric charge transferred using Q = It.
I = 15 A · t = 34 s
5. A steady current of 9 A flows through a lamp for 9 s. Calculate the total electric charge transferred using Q = It.
I = 9 A · t = 9 s
6. A steady current of 4 A flows through a lamp for 91 s. Calculate the total electric charge transferred using Q = It.
I = 4 A · t = 91 s
7. A steady current of 15 A flows through a lamp for 64 s. Calculate the total electric charge transferred using Q = It.
I = 15 A · t = 64 s
8. A steady current of 7 A flows through a lamp for 37 s. Calculate the total electric charge transferred using Q = It.
I = 7 A · t = 37 s
9. A steady current of 15 A flows through a lamp for 110 s. Calculate the total electric charge transferred using Q = It.
I = 15 A · t = 110 s
10. A steady current of 8 A flows through a lamp for 109 s. Calculate the total electric charge transferred using Q = It.
I = 8 A · t = 109 s
11. A steady current of 8 A flows through a lamp for 29 s. Calculate the total electric charge transferred using Q = It.
I = 8 A · t = 29 s
12. A steady current of 10 A flows through a lamp for 68 s. Calculate the total electric charge transferred using Q = It.
I = 10 A · t = 68 s

12 questions · Seed 46 · 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 14 A flows through a lamp for 26 s. Calculate the total electric charge transferred using Q = It.
364 C
Charge Q = current × time = 14 A × 26 s = 364 C.
2. A steady current of 12 A flows through a lamp for 53 s. Calculate the total electric charge transferred using Q = It.
636 C
Charge Q = current × time = 12 A × 53 s = 636 C.
3. A steady current of 4 A flows through a lamp for 59 s. Calculate the total electric charge transferred using Q = It.
236 C
Charge Q = current × time = 4 A × 59 s = 236 C.
4. A steady current of 15 A flows through a lamp for 34 s. Calculate the total electric charge transferred using Q = It.
510 C
Charge Q = current × time = 15 A × 34 s = 510 C.
5. A steady current of 9 A flows through a lamp for 9 s. Calculate the total electric charge transferred using Q = It.
81 C
Charge Q = current × time = 9 A × 9 s = 81 C.
6. A steady current of 4 A flows through a lamp for 91 s. Calculate the total electric charge transferred using Q = It.
364 C
Charge Q = current × time = 4 A × 91 s = 364 C.
7. A steady current of 15 A flows through a lamp for 64 s. Calculate the total electric charge transferred using Q = It.
960 C
Charge Q = current × time = 15 A × 64 s = 960 C.
8. A steady current of 7 A flows through a lamp for 37 s. Calculate the total electric charge transferred using Q = It.
259 C
Charge Q = current × time = 7 A × 37 s = 259 C.
9. A steady current of 15 A flows through a lamp for 110 s. Calculate the total electric charge transferred using Q = It.
1650 C
Charge Q = current × time = 15 A × 110 s = 1650 C.
10. A steady current of 8 A flows through a lamp for 109 s. Calculate the total electric charge transferred using Q = It.
872 C
Charge Q = current × time = 8 A × 109 s = 872 C.
11. A steady current of 8 A flows through a lamp for 29 s. Calculate the total electric charge transferred using Q = It.
232 C
Charge Q = current × time = 8 A × 29 s = 232 C.
12. A steady current of 10 A flows through a lamp for 68 s. Calculate the total electric charge transferred using Q = It.
680 C
Charge Q = current × time = 10 A × 68 s = 680 C.

12 questions · Seed 46 · 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 14 A flows through a lamp for 26 s. Calculate the total electric charge transferred using Q = It.
I = 14 A · t = 26 s
2. A steady current of 12 A flows through a lamp for 53 s. Calculate the total electric charge transferred using Q = It.
I = 12 A · t = 53 s
3. A steady current of 4 A flows through a lamp for 59 s. Calculate the total electric charge transferred using Q = It.
I = 4 A · t = 59 s
4. A steady current of 15 A flows through a lamp for 34 s. Calculate the total electric charge transferred using Q = It.
I = 15 A · t = 34 s
5. A steady current of 9 A flows through a lamp for 9 s. Calculate the total electric charge transferred using Q = It.
I = 9 A · t = 9 s
6. A steady current of 4 A flows through a lamp for 91 s. Calculate the total electric charge transferred using Q = It.
I = 4 A · t = 91 s
7. A steady current of 15 A flows through a lamp for 64 s. Calculate the total electric charge transferred using Q = It.
I = 15 A · t = 64 s
8. A steady current of 7 A flows through a lamp for 37 s. Calculate the total electric charge transferred using Q = It.
I = 7 A · t = 37 s
9. A steady current of 15 A flows through a lamp for 110 s. Calculate the total electric charge transferred using Q = It.
I = 15 A · t = 110 s
10. A steady current of 8 A flows through a lamp for 109 s. Calculate the total electric charge transferred using Q = It.
I = 8 A · t = 109 s
11. A steady current of 8 A flows through a lamp for 29 s. Calculate the total electric charge transferred using Q = It.
I = 8 A · t = 29 s
12. A steady current of 10 A flows through a lamp for 68 s. Calculate the total electric charge transferred using Q = It.
I = 10 A · t = 68 s

12 questions · Seed 46 · 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 14 A flows through a lamp for 26 s. Calculate the total electric charge transferred using Q = It.
364 C
Charge Q = current × time = 14 A × 26 s = 364 C.
2. A steady current of 12 A flows through a lamp for 53 s. Calculate the total electric charge transferred using Q = It.
636 C
Charge Q = current × time = 12 A × 53 s = 636 C.
3. A steady current of 4 A flows through a lamp for 59 s. Calculate the total electric charge transferred using Q = It.
236 C
Charge Q = current × time = 4 A × 59 s = 236 C.
4. A steady current of 15 A flows through a lamp for 34 s. Calculate the total electric charge transferred using Q = It.
510 C
Charge Q = current × time = 15 A × 34 s = 510 C.
5. A steady current of 9 A flows through a lamp for 9 s. Calculate the total electric charge transferred using Q = It.
81 C
Charge Q = current × time = 9 A × 9 s = 81 C.
6. A steady current of 4 A flows through a lamp for 91 s. Calculate the total electric charge transferred using Q = It.
364 C
Charge Q = current × time = 4 A × 91 s = 364 C.
7. A steady current of 15 A flows through a lamp for 64 s. Calculate the total electric charge transferred using Q = It.
960 C
Charge Q = current × time = 15 A × 64 s = 960 C.
8. A steady current of 7 A flows through a lamp for 37 s. Calculate the total electric charge transferred using Q = It.
259 C
Charge Q = current × time = 7 A × 37 s = 259 C.
9. A steady current of 15 A flows through a lamp for 110 s. Calculate the total electric charge transferred using Q = It.
1650 C
Charge Q = current × time = 15 A × 110 s = 1650 C.
10. A steady current of 8 A flows through a lamp for 109 s. Calculate the total electric charge transferred using Q = It.
872 C
Charge Q = current × time = 8 A × 109 s = 872 C.
11. A steady current of 8 A flows through a lamp for 29 s. Calculate the total electric charge transferred using Q = It.
232 C
Charge Q = current × time = 8 A × 29 s = 232 C.
12. A steady current of 10 A flows through a lamp for 68 s. Calculate the total electric charge transferred using Q = It.
680 C
Charge Q = current × time = 10 A × 68 s = 680 C.

12 questions · Seed 46 · Age guidance, not curriculum certification