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.

New variation Try interactive challenge Browse templates

Age band:Ages 13-15 Ages 16-18

Choose “Save as PDF” to keep a copy. Use your browser’s paper setting for A4 or Letter.

Worksheet StudioPractice pack · Ages 13-15

Electric charge & current (Q = It)

Take your time. Show your thinking.

1. A steady current of 12 A flows through a lamp for 116 s. Calculate the total electric charge transferred using Q = It.
I = 12 A · t = 116 s
2. A steady current of 7 A flows through a lamp for 76 s. Calculate the total electric charge transferred using Q = It.
I = 7 A · t = 76 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 11 A flows through a lamp for 39 s. Calculate the total electric charge transferred using Q = It.
I = 11 A · t = 39 s
5. A steady current of 10 A flows through a lamp for 89 s. Calculate the total electric charge transferred using Q = It.
I = 10 A · t = 89 s
6. A steady current of 12 A flows through a lamp for 117 s. Calculate the total electric charge transferred using Q = It.
I = 12 A · t = 117 s
7. A steady current of 4 A flows through a lamp for 21 s. Calculate the total electric charge transferred using Q = It.
I = 4 A · t = 21 s
8. A steady current of 6 A flows through a lamp for 106 s. Calculate the total electric charge transferred using Q = It.
I = 6 A · t = 106 s
9. A steady current of 12 A flows through a lamp for 95 s. Calculate the total electric charge transferred using Q = It.
I = 12 A · t = 95 s
10. A steady current of 4 A flows through a lamp for 71 s. Calculate the total electric charge transferred using Q = It.
I = 4 A · t = 71 s
11. A steady current of 7 A flows through a lamp for 96 s. Calculate the total electric charge transferred using Q = It.
I = 7 A · t = 96 s
12. A steady current of 15 A flows through a lamp for 69 s. Calculate the total electric charge transferred using Q = It.
I = 15 A · t = 69 s

12 questions · Seed 104734 · 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 12 A flows through a lamp for 116 s. Calculate the total electric charge transferred using Q = It.
1392 C
Charge Q = current × time = 12 A × 116 s = 1392 C.
2. A steady current of 7 A flows through a lamp for 76 s. Calculate the total electric charge transferred using Q = It.
532 C
Charge Q = current × time = 7 A × 76 s = 532 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 11 A flows through a lamp for 39 s. Calculate the total electric charge transferred using Q = It.
429 C
Charge Q = current × time = 11 A × 39 s = 429 C.
5. A steady current of 10 A flows through a lamp for 89 s. Calculate the total electric charge transferred using Q = It.
890 C
Charge Q = current × time = 10 A × 89 s = 890 C.
6. A steady current of 12 A flows through a lamp for 117 s. Calculate the total electric charge transferred using Q = It.
1404 C
Charge Q = current × time = 12 A × 117 s = 1404 C.
7. A steady current of 4 A flows through a lamp for 21 s. Calculate the total electric charge transferred using Q = It.
84 C
Charge Q = current × time = 4 A × 21 s = 84 C.
8. A steady current of 6 A flows through a lamp for 106 s. Calculate the total electric charge transferred using Q = It.
636 C
Charge Q = current × time = 6 A × 106 s = 636 C.
9. A steady current of 12 A flows through a lamp for 95 s. Calculate the total electric charge transferred using Q = It.
1140 C
Charge Q = current × time = 12 A × 95 s = 1140 C.
10. A steady current of 4 A flows through a lamp for 71 s. Calculate the total electric charge transferred using Q = It.
284 C
Charge Q = current × time = 4 A × 71 s = 284 C.
11. A steady current of 7 A flows through a lamp for 96 s. Calculate the total electric charge transferred using Q = It.
672 C
Charge Q = current × time = 7 A × 96 s = 672 C.
12. A steady current of 15 A flows through a lamp for 69 s. Calculate the total electric charge transferred using Q = It.
1035 C
Charge Q = current × time = 15 A × 69 s = 1035 C.

12 questions · Seed 104734 · 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 12 A flows through a lamp for 116 s. Calculate the total electric charge transferred using Q = It.
I = 12 A · t = 116 s
2. A steady current of 7 A flows through a lamp for 76 s. Calculate the total electric charge transferred using Q = It.
I = 7 A · t = 76 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 11 A flows through a lamp for 39 s. Calculate the total electric charge transferred using Q = It.
I = 11 A · t = 39 s
5. A steady current of 10 A flows through a lamp for 89 s. Calculate the total electric charge transferred using Q = It.
I = 10 A · t = 89 s
6. A steady current of 12 A flows through a lamp for 117 s. Calculate the total electric charge transferred using Q = It.
I = 12 A · t = 117 s
7. A steady current of 4 A flows through a lamp for 21 s. Calculate the total electric charge transferred using Q = It.
I = 4 A · t = 21 s
8. A steady current of 6 A flows through a lamp for 106 s. Calculate the total electric charge transferred using Q = It.
I = 6 A · t = 106 s
9. A steady current of 12 A flows through a lamp for 95 s. Calculate the total electric charge transferred using Q = It.
I = 12 A · t = 95 s
10. A steady current of 4 A flows through a lamp for 71 s. Calculate the total electric charge transferred using Q = It.
I = 4 A · t = 71 s
11. A steady current of 7 A flows through a lamp for 96 s. Calculate the total electric charge transferred using Q = It.
I = 7 A · t = 96 s
12. A steady current of 15 A flows through a lamp for 69 s. Calculate the total electric charge transferred using Q = It.
I = 15 A · t = 69 s

12 questions · Seed 104734 · 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 12 A flows through a lamp for 116 s. Calculate the total electric charge transferred using Q = It.
1392 C
Charge Q = current × time = 12 A × 116 s = 1392 C.
2. A steady current of 7 A flows through a lamp for 76 s. Calculate the total electric charge transferred using Q = It.
532 C
Charge Q = current × time = 7 A × 76 s = 532 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 11 A flows through a lamp for 39 s. Calculate the total electric charge transferred using Q = It.
429 C
Charge Q = current × time = 11 A × 39 s = 429 C.
5. A steady current of 10 A flows through a lamp for 89 s. Calculate the total electric charge transferred using Q = It.
890 C
Charge Q = current × time = 10 A × 89 s = 890 C.
6. A steady current of 12 A flows through a lamp for 117 s. Calculate the total electric charge transferred using Q = It.
1404 C
Charge Q = current × time = 12 A × 117 s = 1404 C.
7. A steady current of 4 A flows through a lamp for 21 s. Calculate the total electric charge transferred using Q = It.
84 C
Charge Q = current × time = 4 A × 21 s = 84 C.
8. A steady current of 6 A flows through a lamp for 106 s. Calculate the total electric charge transferred using Q = It.
636 C
Charge Q = current × time = 6 A × 106 s = 636 C.
9. A steady current of 12 A flows through a lamp for 95 s. Calculate the total electric charge transferred using Q = It.
1140 C
Charge Q = current × time = 12 A × 95 s = 1140 C.
10. A steady current of 4 A flows through a lamp for 71 s. Calculate the total electric charge transferred using Q = It.
284 C
Charge Q = current × time = 4 A × 71 s = 284 C.
11. A steady current of 7 A flows through a lamp for 96 s. Calculate the total electric charge transferred using Q = It.
672 C
Charge Q = current × time = 7 A × 96 s = 672 C.
12. A steady current of 15 A flows through a lamp for 69 s. Calculate the total electric charge transferred using Q = It.
1035 C
Charge Q = current × time = 15 A × 69 s = 1035 C.

12 questions · Seed 104734 · Age guidance, not curriculum certification