ScienceAges 13-15

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 13-15

Electric charge & current (Q = It)

Take your time. Show your thinking.

1. A steady current of 6 A flows through a lamp for 74 s. Calculate the total electric charge transferred using Q = It.
I = 6 A · t = 74 s
2. A steady current of 15 A flows through a lamp for 21 s. Calculate the total electric charge transferred using Q = It.
I = 15 A · t = 21 s
3. A steady current of 9 A flows through a lamp for 13 s. Calculate the total electric charge transferred using Q = It.
I = 9 A · t = 13 s
4. A steady current of 2 A flows through a lamp for 7 s. Calculate the total electric charge transferred using Q = It.
I = 2 A · t = 7 s
5. A steady current of 1 A flows through a lamp for 84 s. Calculate the total electric charge transferred using Q = It.
I = 1 A · t = 84 s
6. A steady current of 4 A flows through a lamp for 64 s. Calculate the total electric charge transferred using Q = It.
I = 4 A · t = 64 s
7. A steady current of 11 A flows through a lamp for 25 s. Calculate the total electric charge transferred using Q = It.
I = 11 A · t = 25 s
8. A steady current of 6 A flows through a lamp for 115 s. Calculate the total electric charge transferred using Q = It.
I = 6 A · t = 115 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 7 A flows through a lamp for 85 s. Calculate the total electric charge transferred using Q = It.
I = 7 A · t = 85 s
11. A steady current of 10 A flows through a lamp for 103 s. Calculate the total electric charge transferred using Q = It.
I = 10 A · t = 103 s
12. A steady current of 7 A flows through a lamp for 114 s. Calculate the total electric charge transferred using Q = It.
I = 7 A · t = 114 s

12 questions · Seed 51 · Age guidance, not curriculum certification

View the answer key

Worksheet StudioAnswer key · Ages 13-15

Electric charge & current (Q = It)

Answers and reasoning. Review before teaching.

1. A steady current of 6 A flows through a lamp for 74 s. Calculate the total electric charge transferred using Q = It.
444 C
Charge Q = current × time = 6 A × 74 s = 444 C.
2. A steady current of 15 A flows through a lamp for 21 s. Calculate the total electric charge transferred using Q = It.
315 C
Charge Q = current × time = 15 A × 21 s = 315 C.
3. A steady current of 9 A flows through a lamp for 13 s. Calculate the total electric charge transferred using Q = It.
117 C
Charge Q = current × time = 9 A × 13 s = 117 C.
4. A steady current of 2 A flows through a lamp for 7 s. Calculate the total electric charge transferred using Q = It.
14 C
Charge Q = current × time = 2 A × 7 s = 14 C.
5. A steady current of 1 A flows through a lamp for 84 s. Calculate the total electric charge transferred using Q = It.
84 C
Charge Q = current × time = 1 A × 84 s = 84 C.
6. A steady current of 4 A flows through a lamp for 64 s. Calculate the total electric charge transferred using Q = It.
256 C
Charge Q = current × time = 4 A × 64 s = 256 C.
7. A steady current of 11 A flows through a lamp for 25 s. Calculate the total electric charge transferred using Q = It.
275 C
Charge Q = current × time = 11 A × 25 s = 275 C.
8. A steady current of 6 A flows through a lamp for 115 s. Calculate the total electric charge transferred using Q = It.
690 C
Charge Q = current × time = 6 A × 115 s = 690 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 7 A flows through a lamp for 85 s. Calculate the total electric charge transferred using Q = It.
595 C
Charge Q = current × time = 7 A × 85 s = 595 C.
11. A steady current of 10 A flows through a lamp for 103 s. Calculate the total electric charge transferred using Q = It.
1030 C
Charge Q = current × time = 10 A × 103 s = 1030 C.
12. A steady current of 7 A flows through a lamp for 114 s. Calculate the total electric charge transferred using Q = It.
798 C
Charge Q = current × time = 7 A × 114 s = 798 C.

12 questions · Seed 51 · Age guidance, not curriculum certification

Worksheet StudioPractice pack · Ages 13-15

Electric charge & current (Q = It)

Take your time. Show your thinking.

1. A steady current of 6 A flows through a lamp for 74 s. Calculate the total electric charge transferred using Q = It.
I = 6 A · t = 74 s
2. A steady current of 15 A flows through a lamp for 21 s. Calculate the total electric charge transferred using Q = It.
I = 15 A · t = 21 s
3. A steady current of 9 A flows through a lamp for 13 s. Calculate the total electric charge transferred using Q = It.
I = 9 A · t = 13 s
4. A steady current of 2 A flows through a lamp for 7 s. Calculate the total electric charge transferred using Q = It.
I = 2 A · t = 7 s
5. A steady current of 1 A flows through a lamp for 84 s. Calculate the total electric charge transferred using Q = It.
I = 1 A · t = 84 s
6. A steady current of 4 A flows through a lamp for 64 s. Calculate the total electric charge transferred using Q = It.
I = 4 A · t = 64 s
7. A steady current of 11 A flows through a lamp for 25 s. Calculate the total electric charge transferred using Q = It.
I = 11 A · t = 25 s
8. A steady current of 6 A flows through a lamp for 115 s. Calculate the total electric charge transferred using Q = It.
I = 6 A · t = 115 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 7 A flows through a lamp for 85 s. Calculate the total electric charge transferred using Q = It.
I = 7 A · t = 85 s
11. A steady current of 10 A flows through a lamp for 103 s. Calculate the total electric charge transferred using Q = It.
I = 10 A · t = 103 s
12. A steady current of 7 A flows through a lamp for 114 s. Calculate the total electric charge transferred using Q = It.
I = 7 A · t = 114 s

12 questions · Seed 51 · Age guidance, not curriculum certification

Worksheet StudioAnswer key · Ages 13-15

Electric charge & current (Q = It)

Answers and reasoning. Review before teaching.

1. A steady current of 6 A flows through a lamp for 74 s. Calculate the total electric charge transferred using Q = It.
444 C
Charge Q = current × time = 6 A × 74 s = 444 C.
2. A steady current of 15 A flows through a lamp for 21 s. Calculate the total electric charge transferred using Q = It.
315 C
Charge Q = current × time = 15 A × 21 s = 315 C.
3. A steady current of 9 A flows through a lamp for 13 s. Calculate the total electric charge transferred using Q = It.
117 C
Charge Q = current × time = 9 A × 13 s = 117 C.
4. A steady current of 2 A flows through a lamp for 7 s. Calculate the total electric charge transferred using Q = It.
14 C
Charge Q = current × time = 2 A × 7 s = 14 C.
5. A steady current of 1 A flows through a lamp for 84 s. Calculate the total electric charge transferred using Q = It.
84 C
Charge Q = current × time = 1 A × 84 s = 84 C.
6. A steady current of 4 A flows through a lamp for 64 s. Calculate the total electric charge transferred using Q = It.
256 C
Charge Q = current × time = 4 A × 64 s = 256 C.
7. A steady current of 11 A flows through a lamp for 25 s. Calculate the total electric charge transferred using Q = It.
275 C
Charge Q = current × time = 11 A × 25 s = 275 C.
8. A steady current of 6 A flows through a lamp for 115 s. Calculate the total electric charge transferred using Q = It.
690 C
Charge Q = current × time = 6 A × 115 s = 690 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 7 A flows through a lamp for 85 s. Calculate the total electric charge transferred using Q = It.
595 C
Charge Q = current × time = 7 A × 85 s = 595 C.
11. A steady current of 10 A flows through a lamp for 103 s. Calculate the total electric charge transferred using Q = It.
1030 C
Charge Q = current × time = 10 A × 103 s = 1030 C.
12. A steady current of 7 A flows through a lamp for 114 s. Calculate the total electric charge transferred using Q = It.
798 C
Charge Q = current × time = 7 A × 114 s = 798 C.

12 questions · Seed 51 · Age guidance, not curriculum certification