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 13 A flows through a lamp for 73 s. Calculate the total electric charge transferred using Q = It.
I = 13 A · t = 73 s
2. A steady current of 13 A flows through a lamp for 114 s. Calculate the total electric charge transferred using Q = It.
I = 13 A · t = 114 s
3. A steady current of 7 A flows through a lamp for 91 s. Calculate the total electric charge transferred using Q = It.
I = 7 A · t = 91 s
4. A steady current of 15 A flows through a lamp for 77 s. Calculate the total electric charge transferred using Q = It.
I = 15 A · t = 77 s
5. A steady current of 4 A flows through a lamp for 114 s. Calculate the total electric charge transferred using Q = It.
I = 4 A · t = 114 s
6. A steady current of 13 A flows through a lamp for 116 s. Calculate the total electric charge transferred using Q = It.
I = 13 A · t = 116 s
7. A steady current of 12 A flows through a lamp for 36 s. Calculate the total electric charge transferred using Q = It.
I = 12 A · t = 36 s
8. A steady current of 1 A flows through a lamp for 36 s. Calculate the total electric charge transferred using Q = It.
I = 1 A · t = 36 s
9. A steady current of 4 A flows through a lamp for 14 s. Calculate the total electric charge transferred using Q = It.
I = 4 A · t = 14 s
10. A steady current of 8 A flows through a lamp for 5 s. Calculate the total electric charge transferred using Q = It.
I = 8 A · t = 5 s
11. A steady current of 6 A flows through a lamp for 49 s. Calculate the total electric charge transferred using Q = It.
I = 6 A · t = 49 s
12. A steady current of 14 A flows through a lamp for 76 s. Calculate the total electric charge transferred using Q = It.
I = 14 A · t = 76 s

12 questions · Seed 57 · 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 13 A flows through a lamp for 73 s. Calculate the total electric charge transferred using Q = It.
949 C
Charge Q = current × time = 13 A × 73 s = 949 C.
2. A steady current of 13 A flows through a lamp for 114 s. Calculate the total electric charge transferred using Q = It.
1482 C
Charge Q = current × time = 13 A × 114 s = 1482 C.
3. A steady current of 7 A flows through a lamp for 91 s. Calculate the total electric charge transferred using Q = It.
637 C
Charge Q = current × time = 7 A × 91 s = 637 C.
4. A steady current of 15 A flows through a lamp for 77 s. Calculate the total electric charge transferred using Q = It.
1155 C
Charge Q = current × time = 15 A × 77 s = 1155 C.
5. A steady current of 4 A flows through a lamp for 114 s. Calculate the total electric charge transferred using Q = It.
456 C
Charge Q = current × time = 4 A × 114 s = 456 C.
6. A steady current of 13 A flows through a lamp for 116 s. Calculate the total electric charge transferred using Q = It.
1508 C
Charge Q = current × time = 13 A × 116 s = 1508 C.
7. A steady current of 12 A flows through a lamp for 36 s. Calculate the total electric charge transferred using Q = It.
432 C
Charge Q = current × time = 12 A × 36 s = 432 C.
8. A steady current of 1 A flows through a lamp for 36 s. Calculate the total electric charge transferred using Q = It.
36 C
Charge Q = current × time = 1 A × 36 s = 36 C.
9. A steady current of 4 A flows through a lamp for 14 s. Calculate the total electric charge transferred using Q = It.
56 C
Charge Q = current × time = 4 A × 14 s = 56 C.
10. A steady current of 8 A flows through a lamp for 5 s. Calculate the total electric charge transferred using Q = It.
40 C
Charge Q = current × time = 8 A × 5 s = 40 C.
11. A steady current of 6 A flows through a lamp for 49 s. Calculate the total electric charge transferred using Q = It.
294 C
Charge Q = current × time = 6 A × 49 s = 294 C.
12. A steady current of 14 A flows through a lamp for 76 s. Calculate the total electric charge transferred using Q = It.
1064 C
Charge Q = current × time = 14 A × 76 s = 1064 C.

12 questions · Seed 57 · 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 13 A flows through a lamp for 73 s. Calculate the total electric charge transferred using Q = It.
I = 13 A · t = 73 s
2. A steady current of 13 A flows through a lamp for 114 s. Calculate the total electric charge transferred using Q = It.
I = 13 A · t = 114 s
3. A steady current of 7 A flows through a lamp for 91 s. Calculate the total electric charge transferred using Q = It.
I = 7 A · t = 91 s
4. A steady current of 15 A flows through a lamp for 77 s. Calculate the total electric charge transferred using Q = It.
I = 15 A · t = 77 s
5. A steady current of 4 A flows through a lamp for 114 s. Calculate the total electric charge transferred using Q = It.
I = 4 A · t = 114 s
6. A steady current of 13 A flows through a lamp for 116 s. Calculate the total electric charge transferred using Q = It.
I = 13 A · t = 116 s
7. A steady current of 12 A flows through a lamp for 36 s. Calculate the total electric charge transferred using Q = It.
I = 12 A · t = 36 s
8. A steady current of 1 A flows through a lamp for 36 s. Calculate the total electric charge transferred using Q = It.
I = 1 A · t = 36 s
9. A steady current of 4 A flows through a lamp for 14 s. Calculate the total electric charge transferred using Q = It.
I = 4 A · t = 14 s
10. A steady current of 8 A flows through a lamp for 5 s. Calculate the total electric charge transferred using Q = It.
I = 8 A · t = 5 s
11. A steady current of 6 A flows through a lamp for 49 s. Calculate the total electric charge transferred using Q = It.
I = 6 A · t = 49 s
12. A steady current of 14 A flows through a lamp for 76 s. Calculate the total electric charge transferred using Q = It.
I = 14 A · t = 76 s

12 questions · Seed 57 · 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 13 A flows through a lamp for 73 s. Calculate the total electric charge transferred using Q = It.
949 C
Charge Q = current × time = 13 A × 73 s = 949 C.
2. A steady current of 13 A flows through a lamp for 114 s. Calculate the total electric charge transferred using Q = It.
1482 C
Charge Q = current × time = 13 A × 114 s = 1482 C.
3. A steady current of 7 A flows through a lamp for 91 s. Calculate the total electric charge transferred using Q = It.
637 C
Charge Q = current × time = 7 A × 91 s = 637 C.
4. A steady current of 15 A flows through a lamp for 77 s. Calculate the total electric charge transferred using Q = It.
1155 C
Charge Q = current × time = 15 A × 77 s = 1155 C.
5. A steady current of 4 A flows through a lamp for 114 s. Calculate the total electric charge transferred using Q = It.
456 C
Charge Q = current × time = 4 A × 114 s = 456 C.
6. A steady current of 13 A flows through a lamp for 116 s. Calculate the total electric charge transferred using Q = It.
1508 C
Charge Q = current × time = 13 A × 116 s = 1508 C.
7. A steady current of 12 A flows through a lamp for 36 s. Calculate the total electric charge transferred using Q = It.
432 C
Charge Q = current × time = 12 A × 36 s = 432 C.
8. A steady current of 1 A flows through a lamp for 36 s. Calculate the total electric charge transferred using Q = It.
36 C
Charge Q = current × time = 1 A × 36 s = 36 C.
9. A steady current of 4 A flows through a lamp for 14 s. Calculate the total electric charge transferred using Q = It.
56 C
Charge Q = current × time = 4 A × 14 s = 56 C.
10. A steady current of 8 A flows through a lamp for 5 s. Calculate the total electric charge transferred using Q = It.
40 C
Charge Q = current × time = 8 A × 5 s = 40 C.
11. A steady current of 6 A flows through a lamp for 49 s. Calculate the total electric charge transferred using Q = It.
294 C
Charge Q = current × time = 6 A × 49 s = 294 C.
12. A steady current of 14 A flows through a lamp for 76 s. Calculate the total electric charge transferred using Q = It.
1064 C
Charge Q = current × time = 14 A × 76 s = 1064 C.

12 questions · Seed 57 · Age guidance, not curriculum certification