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 72 s. Calculate the total electric charge transferred using Q = It.
I = 10 A · t = 72 s
2. A steady current of 11 A flows through a lamp for 9 s. Calculate the total electric charge transferred using Q = It.
I = 11 A · t = 9 s
3. A steady current of 1 A flows through a lamp for 47 s. Calculate the total electric charge transferred using Q = It.
I = 1 A · t = 47 s
4. A steady current of 15 A flows through a lamp for 106 s. Calculate the total electric charge transferred using Q = It.
I = 15 A · t = 106 s
5. A steady current of 9 A flows through a lamp for 63 s. Calculate the total electric charge transferred using Q = It.
I = 9 A · t = 63 s
6. A steady current of 12 A flows through a lamp for 10 s. Calculate the total electric charge transferred using Q = It.
I = 12 A · t = 10 s
7. A steady current of 10 A flows through a lamp for 59 s. Calculate the total electric charge transferred using Q = It.
I = 10 A · t = 59 s
8. A steady current of 11 A flows through a lamp for 24 s. Calculate the total electric charge transferred using Q = It.
I = 11 A · t = 24 s
9. 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
10. A steady current of 14 A flows through a lamp for 88 s. Calculate the total electric charge transferred using Q = It.
I = 14 A · t = 88 s
11. A steady current of 2 A flows through a lamp for 107 s. Calculate the total electric charge transferred using Q = It.
I = 2 A · t = 107 s
12. A steady current of 3 A flows through a lamp for 33 s. Calculate the total electric charge transferred using Q = It.
I = 3 A · t = 33 s

12 questions · Seed 48 · 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 72 s. Calculate the total electric charge transferred using Q = It.
720 C
Charge Q = current × time = 10 A × 72 s = 720 C.
2. A steady current of 11 A flows through a lamp for 9 s. Calculate the total electric charge transferred using Q = It.
99 C
Charge Q = current × time = 11 A × 9 s = 99 C.
3. A steady current of 1 A flows through a lamp for 47 s. Calculate the total electric charge transferred using Q = It.
47 C
Charge Q = current × time = 1 A × 47 s = 47 C.
4. A steady current of 15 A flows through a lamp for 106 s. Calculate the total electric charge transferred using Q = It.
1590 C
Charge Q = current × time = 15 A × 106 s = 1590 C.
5. A steady current of 9 A flows through a lamp for 63 s. Calculate the total electric charge transferred using Q = It.
567 C
Charge Q = current × time = 9 A × 63 s = 567 C.
6. A steady current of 12 A flows through a lamp for 10 s. Calculate the total electric charge transferred using Q = It.
120 C
Charge Q = current × time = 12 A × 10 s = 120 C.
7. A steady current of 10 A flows through a lamp for 59 s. Calculate the total electric charge transferred using Q = It.
590 C
Charge Q = current × time = 10 A × 59 s = 590 C.
8. A steady current of 11 A flows through a lamp for 24 s. Calculate the total electric charge transferred using Q = It.
264 C
Charge Q = current × time = 11 A × 24 s = 264 C.
9. 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.
10. A steady current of 14 A flows through a lamp for 88 s. Calculate the total electric charge transferred using Q = It.
1232 C
Charge Q = current × time = 14 A × 88 s = 1232 C.
11. A steady current of 2 A flows through a lamp for 107 s. Calculate the total electric charge transferred using Q = It.
214 C
Charge Q = current × time = 2 A × 107 s = 214 C.
12. A steady current of 3 A flows through a lamp for 33 s. Calculate the total electric charge transferred using Q = It.
99 C
Charge Q = current × time = 3 A × 33 s = 99 C.

12 questions · Seed 48 · 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 72 s. Calculate the total electric charge transferred using Q = It.
I = 10 A · t = 72 s
2. A steady current of 11 A flows through a lamp for 9 s. Calculate the total electric charge transferred using Q = It.
I = 11 A · t = 9 s
3. A steady current of 1 A flows through a lamp for 47 s. Calculate the total electric charge transferred using Q = It.
I = 1 A · t = 47 s
4. A steady current of 15 A flows through a lamp for 106 s. Calculate the total electric charge transferred using Q = It.
I = 15 A · t = 106 s
5. A steady current of 9 A flows through a lamp for 63 s. Calculate the total electric charge transferred using Q = It.
I = 9 A · t = 63 s
6. A steady current of 12 A flows through a lamp for 10 s. Calculate the total electric charge transferred using Q = It.
I = 12 A · t = 10 s
7. A steady current of 10 A flows through a lamp for 59 s. Calculate the total electric charge transferred using Q = It.
I = 10 A · t = 59 s
8. A steady current of 11 A flows through a lamp for 24 s. Calculate the total electric charge transferred using Q = It.
I = 11 A · t = 24 s
9. 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
10. A steady current of 14 A flows through a lamp for 88 s. Calculate the total electric charge transferred using Q = It.
I = 14 A · t = 88 s
11. A steady current of 2 A flows through a lamp for 107 s. Calculate the total electric charge transferred using Q = It.
I = 2 A · t = 107 s
12. A steady current of 3 A flows through a lamp for 33 s. Calculate the total electric charge transferred using Q = It.
I = 3 A · t = 33 s

12 questions · Seed 48 · 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 72 s. Calculate the total electric charge transferred using Q = It.
720 C
Charge Q = current × time = 10 A × 72 s = 720 C.
2. A steady current of 11 A flows through a lamp for 9 s. Calculate the total electric charge transferred using Q = It.
99 C
Charge Q = current × time = 11 A × 9 s = 99 C.
3. A steady current of 1 A flows through a lamp for 47 s. Calculate the total electric charge transferred using Q = It.
47 C
Charge Q = current × time = 1 A × 47 s = 47 C.
4. A steady current of 15 A flows through a lamp for 106 s. Calculate the total electric charge transferred using Q = It.
1590 C
Charge Q = current × time = 15 A × 106 s = 1590 C.
5. A steady current of 9 A flows through a lamp for 63 s. Calculate the total electric charge transferred using Q = It.
567 C
Charge Q = current × time = 9 A × 63 s = 567 C.
6. A steady current of 12 A flows through a lamp for 10 s. Calculate the total electric charge transferred using Q = It.
120 C
Charge Q = current × time = 12 A × 10 s = 120 C.
7. A steady current of 10 A flows through a lamp for 59 s. Calculate the total electric charge transferred using Q = It.
590 C
Charge Q = current × time = 10 A × 59 s = 590 C.
8. A steady current of 11 A flows through a lamp for 24 s. Calculate the total electric charge transferred using Q = It.
264 C
Charge Q = current × time = 11 A × 24 s = 264 C.
9. 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.
10. A steady current of 14 A flows through a lamp for 88 s. Calculate the total electric charge transferred using Q = It.
1232 C
Charge Q = current × time = 14 A × 88 s = 1232 C.
11. A steady current of 2 A flows through a lamp for 107 s. Calculate the total electric charge transferred using Q = It.
214 C
Charge Q = current × time = 2 A × 107 s = 214 C.
12. A steady current of 3 A flows through a lamp for 33 s. Calculate the total electric charge transferred using Q = It.
99 C
Charge Q = current × time = 3 A × 33 s = 99 C.

12 questions · Seed 48 · Age guidance, not curriculum certification