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 11 A flows through a lamp for 72 s. Calculate the total electric charge transferred using Q = It.
I = 11 A · t = 72 s
2. A steady current of 9 A flows through a lamp for 111 s. Calculate the total electric charge transferred using Q = It.
I = 9 A · t = 111 s
3. A steady current of 6 A flows through a lamp for 103 s. Calculate the total electric charge transferred using Q = It.
I = 6 A · t = 103 s
4. A steady current of 11 A flows through a lamp for 79 s. Calculate the total electric charge transferred using Q = It.
I = 11 A · t = 79 s
5. A steady current of 2 A flows through a lamp for 44 s. Calculate the total electric charge transferred using Q = It.
I = 2 A · t = 44 s
6. A steady current of 8 A flows through a lamp for 117 s. Calculate the total electric charge transferred using Q = It.
I = 8 A · t = 117 s
7. 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
8. A steady current of 12 A flows through a lamp for 107 s. Calculate the total electric charge transferred using Q = It.
I = 12 A · t = 107 s
9. A steady current of 3 A flows through a lamp for 80 s. Calculate the total electric charge transferred using Q = It.
I = 3 A · t = 80 s
10. A steady current of 10 A flows through a lamp for 78 s. Calculate the total electric charge transferred using Q = It.
I = 10 A · t = 78 s
11. A steady current of 3 A flows through a lamp for 57 s. Calculate the total electric charge transferred using Q = It.
I = 3 A · t = 57 s
12. A steady current of 5 A flows through a lamp for 87 s. Calculate the total electric charge transferred using Q = It.
I = 5 A · t = 87 s

12 questions · Seed 104735 · 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 11 A flows through a lamp for 72 s. Calculate the total electric charge transferred using Q = It.
792 C
Charge Q = current × time = 11 A × 72 s = 792 C.
2. A steady current of 9 A flows through a lamp for 111 s. Calculate the total electric charge transferred using Q = It.
999 C
Charge Q = current × time = 9 A × 111 s = 999 C.
3. A steady current of 6 A flows through a lamp for 103 s. Calculate the total electric charge transferred using Q = It.
618 C
Charge Q = current × time = 6 A × 103 s = 618 C.
4. A steady current of 11 A flows through a lamp for 79 s. Calculate the total electric charge transferred using Q = It.
869 C
Charge Q = current × time = 11 A × 79 s = 869 C.
5. A steady current of 2 A flows through a lamp for 44 s. Calculate the total electric charge transferred using Q = It.
88 C
Charge Q = current × time = 2 A × 44 s = 88 C.
6. A steady current of 8 A flows through a lamp for 117 s. Calculate the total electric charge transferred using Q = It.
936 C
Charge Q = current × time = 8 A × 117 s = 936 C.
7. 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.
8. A steady current of 12 A flows through a lamp for 107 s. Calculate the total electric charge transferred using Q = It.
1284 C
Charge Q = current × time = 12 A × 107 s = 1284 C.
9. A steady current of 3 A flows through a lamp for 80 s. Calculate the total electric charge transferred using Q = It.
240 C
Charge Q = current × time = 3 A × 80 s = 240 C.
10. A steady current of 10 A flows through a lamp for 78 s. Calculate the total electric charge transferred using Q = It.
780 C
Charge Q = current × time = 10 A × 78 s = 780 C.
11. A steady current of 3 A flows through a lamp for 57 s. Calculate the total electric charge transferred using Q = It.
171 C
Charge Q = current × time = 3 A × 57 s = 171 C.
12. A steady current of 5 A flows through a lamp for 87 s. Calculate the total electric charge transferred using Q = It.
435 C
Charge Q = current × time = 5 A × 87 s = 435 C.

12 questions · Seed 104735 · 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 11 A flows through a lamp for 72 s. Calculate the total electric charge transferred using Q = It.
I = 11 A · t = 72 s
2. A steady current of 9 A flows through a lamp for 111 s. Calculate the total electric charge transferred using Q = It.
I = 9 A · t = 111 s
3. A steady current of 6 A flows through a lamp for 103 s. Calculate the total electric charge transferred using Q = It.
I = 6 A · t = 103 s
4. A steady current of 11 A flows through a lamp for 79 s. Calculate the total electric charge transferred using Q = It.
I = 11 A · t = 79 s
5. A steady current of 2 A flows through a lamp for 44 s. Calculate the total electric charge transferred using Q = It.
I = 2 A · t = 44 s
6. A steady current of 8 A flows through a lamp for 117 s. Calculate the total electric charge transferred using Q = It.
I = 8 A · t = 117 s
7. 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
8. A steady current of 12 A flows through a lamp for 107 s. Calculate the total electric charge transferred using Q = It.
I = 12 A · t = 107 s
9. A steady current of 3 A flows through a lamp for 80 s. Calculate the total electric charge transferred using Q = It.
I = 3 A · t = 80 s
10. A steady current of 10 A flows through a lamp for 78 s. Calculate the total electric charge transferred using Q = It.
I = 10 A · t = 78 s
11. A steady current of 3 A flows through a lamp for 57 s. Calculate the total electric charge transferred using Q = It.
I = 3 A · t = 57 s
12. A steady current of 5 A flows through a lamp for 87 s. Calculate the total electric charge transferred using Q = It.
I = 5 A · t = 87 s

12 questions · Seed 104735 · 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 11 A flows through a lamp for 72 s. Calculate the total electric charge transferred using Q = It.
792 C
Charge Q = current × time = 11 A × 72 s = 792 C.
2. A steady current of 9 A flows through a lamp for 111 s. Calculate the total electric charge transferred using Q = It.
999 C
Charge Q = current × time = 9 A × 111 s = 999 C.
3. A steady current of 6 A flows through a lamp for 103 s. Calculate the total electric charge transferred using Q = It.
618 C
Charge Q = current × time = 6 A × 103 s = 618 C.
4. A steady current of 11 A flows through a lamp for 79 s. Calculate the total electric charge transferred using Q = It.
869 C
Charge Q = current × time = 11 A × 79 s = 869 C.
5. A steady current of 2 A flows through a lamp for 44 s. Calculate the total electric charge transferred using Q = It.
88 C
Charge Q = current × time = 2 A × 44 s = 88 C.
6. A steady current of 8 A flows through a lamp for 117 s. Calculate the total electric charge transferred using Q = It.
936 C
Charge Q = current × time = 8 A × 117 s = 936 C.
7. 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.
8. A steady current of 12 A flows through a lamp for 107 s. Calculate the total electric charge transferred using Q = It.
1284 C
Charge Q = current × time = 12 A × 107 s = 1284 C.
9. A steady current of 3 A flows through a lamp for 80 s. Calculate the total electric charge transferred using Q = It.
240 C
Charge Q = current × time = 3 A × 80 s = 240 C.
10. A steady current of 10 A flows through a lamp for 78 s. Calculate the total electric charge transferred using Q = It.
780 C
Charge Q = current × time = 10 A × 78 s = 780 C.
11. A steady current of 3 A flows through a lamp for 57 s. Calculate the total electric charge transferred using Q = It.
171 C
Charge Q = current × time = 3 A × 57 s = 171 C.
12. A steady current of 5 A flows through a lamp for 87 s. Calculate the total electric charge transferred using Q = It.
435 C
Charge Q = current × time = 5 A × 87 s = 435 C.

12 questions · Seed 104735 · Age guidance, not curriculum certification