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 6 A flows through a lamp for 34 s. Calculate the total electric charge transferred using Q = It.
I = 6 A · t = 34 s
2. A steady current of 14 A flows through a lamp for 92 s. Calculate the total electric charge transferred using Q = It.
I = 14 A · t = 92 s
3. A steady current of 14 A flows through a lamp for 106 s. Calculate the total electric charge transferred using Q = It.
I = 14 A · t = 106 s
4. A steady current of 1 A flows through a lamp for 81 s. Calculate the total electric charge transferred using Q = It.
I = 1 A · t = 81 s
5. A steady current of 6 A flows through a lamp for 36 s. Calculate the total electric charge transferred using Q = It.
I = 6 A · t = 36 s
6. A steady current of 12 A flows through a lamp for 74 s. Calculate the total electric charge transferred using Q = It.
I = 12 A · t = 74 s
7. A steady current of 10 A flows through a lamp for 85 s. Calculate the total electric charge transferred using Q = It.
I = 10 A · t = 85 s
8. A steady current of 1 A flows through a lamp for 40 s. Calculate the total electric charge transferred using Q = It.
I = 1 A · t = 40 s
9. A steady current of 10 A flows through a lamp for 58 s. Calculate the total electric charge transferred using Q = It.
I = 10 A · t = 58 s
10. 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
11. A steady current of 13 A flows through a lamp for 36 s. Calculate the total electric charge transferred using Q = It.
I = 13 A · t = 36 s
12. A steady current of 2 A flows through a lamp for 93 s. Calculate the total electric charge transferred using Q = It.
I = 2 A · t = 93 s

12 questions · Seed 44 · 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 6 A flows through a lamp for 34 s. Calculate the total electric charge transferred using Q = It.
204 C
Charge Q = current × time = 6 A × 34 s = 204 C.
2. A steady current of 14 A flows through a lamp for 92 s. Calculate the total electric charge transferred using Q = It.
1288 C
Charge Q = current × time = 14 A × 92 s = 1288 C.
3. A steady current of 14 A flows through a lamp for 106 s. Calculate the total electric charge transferred using Q = It.
1484 C
Charge Q = current × time = 14 A × 106 s = 1484 C.
4. A steady current of 1 A flows through a lamp for 81 s. Calculate the total electric charge transferred using Q = It.
81 C
Charge Q = current × time = 1 A × 81 s = 81 C.
5. A steady current of 6 A flows through a lamp for 36 s. Calculate the total electric charge transferred using Q = It.
216 C
Charge Q = current × time = 6 A × 36 s = 216 C.
6. A steady current of 12 A flows through a lamp for 74 s. Calculate the total electric charge transferred using Q = It.
888 C
Charge Q = current × time = 12 A × 74 s = 888 C.
7. A steady current of 10 A flows through a lamp for 85 s. Calculate the total electric charge transferred using Q = It.
850 C
Charge Q = current × time = 10 A × 85 s = 850 C.
8. A steady current of 1 A flows through a lamp for 40 s. Calculate the total electric charge transferred using Q = It.
40 C
Charge Q = current × time = 1 A × 40 s = 40 C.
9. A steady current of 10 A flows through a lamp for 58 s. Calculate the total electric charge transferred using Q = It.
580 C
Charge Q = current × time = 10 A × 58 s = 580 C.
10. 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.
11. A steady current of 13 A flows through a lamp for 36 s. Calculate the total electric charge transferred using Q = It.
468 C
Charge Q = current × time = 13 A × 36 s = 468 C.
12. A steady current of 2 A flows through a lamp for 93 s. Calculate the total electric charge transferred using Q = It.
186 C
Charge Q = current × time = 2 A × 93 s = 186 C.

12 questions · Seed 44 · 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 6 A flows through a lamp for 34 s. Calculate the total electric charge transferred using Q = It.
I = 6 A · t = 34 s
2. A steady current of 14 A flows through a lamp for 92 s. Calculate the total electric charge transferred using Q = It.
I = 14 A · t = 92 s
3. A steady current of 14 A flows through a lamp for 106 s. Calculate the total electric charge transferred using Q = It.
I = 14 A · t = 106 s
4. A steady current of 1 A flows through a lamp for 81 s. Calculate the total electric charge transferred using Q = It.
I = 1 A · t = 81 s
5. A steady current of 6 A flows through a lamp for 36 s. Calculate the total electric charge transferred using Q = It.
I = 6 A · t = 36 s
6. A steady current of 12 A flows through a lamp for 74 s. Calculate the total electric charge transferred using Q = It.
I = 12 A · t = 74 s
7. A steady current of 10 A flows through a lamp for 85 s. Calculate the total electric charge transferred using Q = It.
I = 10 A · t = 85 s
8. A steady current of 1 A flows through a lamp for 40 s. Calculate the total electric charge transferred using Q = It.
I = 1 A · t = 40 s
9. A steady current of 10 A flows through a lamp for 58 s. Calculate the total electric charge transferred using Q = It.
I = 10 A · t = 58 s
10. 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
11. A steady current of 13 A flows through a lamp for 36 s. Calculate the total electric charge transferred using Q = It.
I = 13 A · t = 36 s
12. A steady current of 2 A flows through a lamp for 93 s. Calculate the total electric charge transferred using Q = It.
I = 2 A · t = 93 s

12 questions · Seed 44 · 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 6 A flows through a lamp for 34 s. Calculate the total electric charge transferred using Q = It.
204 C
Charge Q = current × time = 6 A × 34 s = 204 C.
2. A steady current of 14 A flows through a lamp for 92 s. Calculate the total electric charge transferred using Q = It.
1288 C
Charge Q = current × time = 14 A × 92 s = 1288 C.
3. A steady current of 14 A flows through a lamp for 106 s. Calculate the total electric charge transferred using Q = It.
1484 C
Charge Q = current × time = 14 A × 106 s = 1484 C.
4. A steady current of 1 A flows through a lamp for 81 s. Calculate the total electric charge transferred using Q = It.
81 C
Charge Q = current × time = 1 A × 81 s = 81 C.
5. A steady current of 6 A flows through a lamp for 36 s. Calculate the total electric charge transferred using Q = It.
216 C
Charge Q = current × time = 6 A × 36 s = 216 C.
6. A steady current of 12 A flows through a lamp for 74 s. Calculate the total electric charge transferred using Q = It.
888 C
Charge Q = current × time = 12 A × 74 s = 888 C.
7. A steady current of 10 A flows through a lamp for 85 s. Calculate the total electric charge transferred using Q = It.
850 C
Charge Q = current × time = 10 A × 85 s = 850 C.
8. A steady current of 1 A flows through a lamp for 40 s. Calculate the total electric charge transferred using Q = It.
40 C
Charge Q = current × time = 1 A × 40 s = 40 C.
9. A steady current of 10 A flows through a lamp for 58 s. Calculate the total electric charge transferred using Q = It.
580 C
Charge Q = current × time = 10 A × 58 s = 580 C.
10. 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.
11. A steady current of 13 A flows through a lamp for 36 s. Calculate the total electric charge transferred using Q = It.
468 C
Charge Q = current × time = 13 A × 36 s = 468 C.
12. A steady current of 2 A flows through a lamp for 93 s. Calculate the total electric charge transferred using Q = It.
186 C
Charge Q = current × time = 2 A × 93 s = 186 C.

12 questions · Seed 44 · Age guidance, not curriculum certification