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 3 A flows through a lamp for 37 s. Calculate the total electric charge transferred using Q = It.
I = 3 A · t = 37 s
2. A steady current of 4 A flows through a lamp for 40 s. Calculate the total electric charge transferred using Q = It.
I = 4 A · t = 40 s
3. A steady current of 12 A flows through a lamp for 26 s. Calculate the total electric charge transferred using Q = It.
I = 12 A · t = 26 s
4. A steady current of 7 A flows through a lamp for 77 s. Calculate the total electric charge transferred using Q = It.
I = 7 A · t = 77 s
5. A steady current of 8 A flows through a lamp for 65 s. Calculate the total electric charge transferred using Q = It.
I = 8 A · t = 65 s
6. A steady current of 13 A flows through a lamp for 119 s. Calculate the total electric charge transferred using Q = It.
I = 13 A · t = 119 s
7. A steady current of 6 A flows through a lamp for 11 s. Calculate the total electric charge transferred using Q = It.
I = 6 A · t = 11 s
8. A steady current of 7 A flows through a lamp for 14 s. Calculate the total electric charge transferred using Q = It.
I = 7 A · t = 14 s
9. A steady current of 2 A flows through a lamp for 60 s. Calculate the total electric charge transferred using Q = It.
I = 2 A · t = 60 s
10. A steady current of 2 A flows through a lamp for 69 s. Calculate the total electric charge transferred using Q = It.
I = 2 A · t = 69 s
11. A steady current of 14 A flows through a lamp for 75 s. Calculate the total electric charge transferred using Q = It.
I = 14 A · t = 75 s
12. A steady current of 9 A flows through a lamp for 117 s. Calculate the total electric charge transferred using Q = It.
I = 9 A · t = 117 s

12 questions · Seed 54 · 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 3 A flows through a lamp for 37 s. Calculate the total electric charge transferred using Q = It.
111 C
Charge Q = current × time = 3 A × 37 s = 111 C.
2. A steady current of 4 A flows through a lamp for 40 s. Calculate the total electric charge transferred using Q = It.
160 C
Charge Q = current × time = 4 A × 40 s = 160 C.
3. A steady current of 12 A flows through a lamp for 26 s. Calculate the total electric charge transferred using Q = It.
312 C
Charge Q = current × time = 12 A × 26 s = 312 C.
4. A steady current of 7 A flows through a lamp for 77 s. Calculate the total electric charge transferred using Q = It.
539 C
Charge Q = current × time = 7 A × 77 s = 539 C.
5. A steady current of 8 A flows through a lamp for 65 s. Calculate the total electric charge transferred using Q = It.
520 C
Charge Q = current × time = 8 A × 65 s = 520 C.
6. A steady current of 13 A flows through a lamp for 119 s. Calculate the total electric charge transferred using Q = It.
1547 C
Charge Q = current × time = 13 A × 119 s = 1547 C.
7. A steady current of 6 A flows through a lamp for 11 s. Calculate the total electric charge transferred using Q = It.
66 C
Charge Q = current × time = 6 A × 11 s = 66 C.
8. A steady current of 7 A flows through a lamp for 14 s. Calculate the total electric charge transferred using Q = It.
98 C
Charge Q = current × time = 7 A × 14 s = 98 C.
9. A steady current of 2 A flows through a lamp for 60 s. Calculate the total electric charge transferred using Q = It.
120 C
Charge Q = current × time = 2 A × 60 s = 120 C.
10. A steady current of 2 A flows through a lamp for 69 s. Calculate the total electric charge transferred using Q = It.
138 C
Charge Q = current × time = 2 A × 69 s = 138 C.
11. A steady current of 14 A flows through a lamp for 75 s. Calculate the total electric charge transferred using Q = It.
1050 C
Charge Q = current × time = 14 A × 75 s = 1050 C.
12. A steady current of 9 A flows through a lamp for 117 s. Calculate the total electric charge transferred using Q = It.
1053 C
Charge Q = current × time = 9 A × 117 s = 1053 C.

12 questions · Seed 54 · 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 3 A flows through a lamp for 37 s. Calculate the total electric charge transferred using Q = It.
I = 3 A · t = 37 s
2. A steady current of 4 A flows through a lamp for 40 s. Calculate the total electric charge transferred using Q = It.
I = 4 A · t = 40 s
3. A steady current of 12 A flows through a lamp for 26 s. Calculate the total electric charge transferred using Q = It.
I = 12 A · t = 26 s
4. A steady current of 7 A flows through a lamp for 77 s. Calculate the total electric charge transferred using Q = It.
I = 7 A · t = 77 s
5. A steady current of 8 A flows through a lamp for 65 s. Calculate the total electric charge transferred using Q = It.
I = 8 A · t = 65 s
6. A steady current of 13 A flows through a lamp for 119 s. Calculate the total electric charge transferred using Q = It.
I = 13 A · t = 119 s
7. A steady current of 6 A flows through a lamp for 11 s. Calculate the total electric charge transferred using Q = It.
I = 6 A · t = 11 s
8. A steady current of 7 A flows through a lamp for 14 s. Calculate the total electric charge transferred using Q = It.
I = 7 A · t = 14 s
9. A steady current of 2 A flows through a lamp for 60 s. Calculate the total electric charge transferred using Q = It.
I = 2 A · t = 60 s
10. A steady current of 2 A flows through a lamp for 69 s. Calculate the total electric charge transferred using Q = It.
I = 2 A · t = 69 s
11. A steady current of 14 A flows through a lamp for 75 s. Calculate the total electric charge transferred using Q = It.
I = 14 A · t = 75 s
12. A steady current of 9 A flows through a lamp for 117 s. Calculate the total electric charge transferred using Q = It.
I = 9 A · t = 117 s

12 questions · Seed 54 · 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 3 A flows through a lamp for 37 s. Calculate the total electric charge transferred using Q = It.
111 C
Charge Q = current × time = 3 A × 37 s = 111 C.
2. A steady current of 4 A flows through a lamp for 40 s. Calculate the total electric charge transferred using Q = It.
160 C
Charge Q = current × time = 4 A × 40 s = 160 C.
3. A steady current of 12 A flows through a lamp for 26 s. Calculate the total electric charge transferred using Q = It.
312 C
Charge Q = current × time = 12 A × 26 s = 312 C.
4. A steady current of 7 A flows through a lamp for 77 s. Calculate the total electric charge transferred using Q = It.
539 C
Charge Q = current × time = 7 A × 77 s = 539 C.
5. A steady current of 8 A flows through a lamp for 65 s. Calculate the total electric charge transferred using Q = It.
520 C
Charge Q = current × time = 8 A × 65 s = 520 C.
6. A steady current of 13 A flows through a lamp for 119 s. Calculate the total electric charge transferred using Q = It.
1547 C
Charge Q = current × time = 13 A × 119 s = 1547 C.
7. A steady current of 6 A flows through a lamp for 11 s. Calculate the total electric charge transferred using Q = It.
66 C
Charge Q = current × time = 6 A × 11 s = 66 C.
8. A steady current of 7 A flows through a lamp for 14 s. Calculate the total electric charge transferred using Q = It.
98 C
Charge Q = current × time = 7 A × 14 s = 98 C.
9. A steady current of 2 A flows through a lamp for 60 s. Calculate the total electric charge transferred using Q = It.
120 C
Charge Q = current × time = 2 A × 60 s = 120 C.
10. A steady current of 2 A flows through a lamp for 69 s. Calculate the total electric charge transferred using Q = It.
138 C
Charge Q = current × time = 2 A × 69 s = 138 C.
11. A steady current of 14 A flows through a lamp for 75 s. Calculate the total electric charge transferred using Q = It.
1050 C
Charge Q = current × time = 14 A × 75 s = 1050 C.
12. A steady current of 9 A flows through a lamp for 117 s. Calculate the total electric charge transferred using Q = It.
1053 C
Charge Q = current × time = 9 A × 117 s = 1053 C.

12 questions · Seed 54 · Age guidance, not curriculum certification