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 13 A flows through a lamp for 52 s. Calculate the total electric charge transferred using Q = It.
I = 13 A · t = 52 s
2. A steady current of 2 A flows through a lamp for 111 s. Calculate the total electric charge transferred using Q = It.
I = 2 A · t = 111 s
3. A steady current of 8 A flows through a lamp for 20 s. Calculate the total electric charge transferred using Q = It.
I = 8 A · t = 20 s
4. A steady current of 8 A flows through a lamp for 68 s. Calculate the total electric charge transferred using Q = It.
I = 8 A · t = 68 s
5. A steady current of 7 A flows through a lamp for 56 s. Calculate the total electric charge transferred using Q = It.
I = 7 A · t = 56 s
6. 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
7. A steady current of 15 A flows through a lamp for 83 s. Calculate the total electric charge transferred using Q = It.
I = 15 A · t = 83 s
8. A steady current of 3 A flows through a lamp for 69 s. Calculate the total electric charge transferred using Q = It.
I = 3 A · t = 69 s
9. A steady current of 3 A flows through a lamp for 25 s. Calculate the total electric charge transferred using Q = It.
I = 3 A · t = 25 s
10. A steady current of 4 A flows through a lamp for 18 s. Calculate the total electric charge transferred using Q = It.
I = 4 A · t = 18 s
11. A steady current of 13 A flows through a lamp for 69 s. Calculate the total electric charge transferred using Q = It.
I = 13 A · t = 69 s
12. A steady current of 3 A flows through a lamp for 14 s. Calculate the total electric charge transferred using Q = It.
I = 3 A · t = 14 s

12 questions · Seed 50 · 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 13 A flows through a lamp for 52 s. Calculate the total electric charge transferred using Q = It.
676 C
Charge Q = current × time = 13 A × 52 s = 676 C.
2. A steady current of 2 A flows through a lamp for 111 s. Calculate the total electric charge transferred using Q = It.
222 C
Charge Q = current × time = 2 A × 111 s = 222 C.
3. A steady current of 8 A flows through a lamp for 20 s. Calculate the total electric charge transferred using Q = It.
160 C
Charge Q = current × time = 8 A × 20 s = 160 C.
4. A steady current of 8 A flows through a lamp for 68 s. Calculate the total electric charge transferred using Q = It.
544 C
Charge Q = current × time = 8 A × 68 s = 544 C.
5. A steady current of 7 A flows through a lamp for 56 s. Calculate the total electric charge transferred using Q = It.
392 C
Charge Q = current × time = 7 A × 56 s = 392 C.
6. 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.
7. A steady current of 15 A flows through a lamp for 83 s. Calculate the total electric charge transferred using Q = It.
1245 C
Charge Q = current × time = 15 A × 83 s = 1245 C.
8. A steady current of 3 A flows through a lamp for 69 s. Calculate the total electric charge transferred using Q = It.
207 C
Charge Q = current × time = 3 A × 69 s = 207 C.
9. A steady current of 3 A flows through a lamp for 25 s. Calculate the total electric charge transferred using Q = It.
75 C
Charge Q = current × time = 3 A × 25 s = 75 C.
10. A steady current of 4 A flows through a lamp for 18 s. Calculate the total electric charge transferred using Q = It.
72 C
Charge Q = current × time = 4 A × 18 s = 72 C.
11. A steady current of 13 A flows through a lamp for 69 s. Calculate the total electric charge transferred using Q = It.
897 C
Charge Q = current × time = 13 A × 69 s = 897 C.
12. A steady current of 3 A flows through a lamp for 14 s. Calculate the total electric charge transferred using Q = It.
42 C
Charge Q = current × time = 3 A × 14 s = 42 C.

12 questions · Seed 50 · 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 13 A flows through a lamp for 52 s. Calculate the total electric charge transferred using Q = It.
I = 13 A · t = 52 s
2. A steady current of 2 A flows through a lamp for 111 s. Calculate the total electric charge transferred using Q = It.
I = 2 A · t = 111 s
3. A steady current of 8 A flows through a lamp for 20 s. Calculate the total electric charge transferred using Q = It.
I = 8 A · t = 20 s
4. A steady current of 8 A flows through a lamp for 68 s. Calculate the total electric charge transferred using Q = It.
I = 8 A · t = 68 s
5. A steady current of 7 A flows through a lamp for 56 s. Calculate the total electric charge transferred using Q = It.
I = 7 A · t = 56 s
6. 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
7. A steady current of 15 A flows through a lamp for 83 s. Calculate the total electric charge transferred using Q = It.
I = 15 A · t = 83 s
8. A steady current of 3 A flows through a lamp for 69 s. Calculate the total electric charge transferred using Q = It.
I = 3 A · t = 69 s
9. A steady current of 3 A flows through a lamp for 25 s. Calculate the total electric charge transferred using Q = It.
I = 3 A · t = 25 s
10. A steady current of 4 A flows through a lamp for 18 s. Calculate the total electric charge transferred using Q = It.
I = 4 A · t = 18 s
11. A steady current of 13 A flows through a lamp for 69 s. Calculate the total electric charge transferred using Q = It.
I = 13 A · t = 69 s
12. A steady current of 3 A flows through a lamp for 14 s. Calculate the total electric charge transferred using Q = It.
I = 3 A · t = 14 s

12 questions · Seed 50 · 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 13 A flows through a lamp for 52 s. Calculate the total electric charge transferred using Q = It.
676 C
Charge Q = current × time = 13 A × 52 s = 676 C.
2. A steady current of 2 A flows through a lamp for 111 s. Calculate the total electric charge transferred using Q = It.
222 C
Charge Q = current × time = 2 A × 111 s = 222 C.
3. A steady current of 8 A flows through a lamp for 20 s. Calculate the total electric charge transferred using Q = It.
160 C
Charge Q = current × time = 8 A × 20 s = 160 C.
4. A steady current of 8 A flows through a lamp for 68 s. Calculate the total electric charge transferred using Q = It.
544 C
Charge Q = current × time = 8 A × 68 s = 544 C.
5. A steady current of 7 A flows through a lamp for 56 s. Calculate the total electric charge transferred using Q = It.
392 C
Charge Q = current × time = 7 A × 56 s = 392 C.
6. 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.
7. A steady current of 15 A flows through a lamp for 83 s. Calculate the total electric charge transferred using Q = It.
1245 C
Charge Q = current × time = 15 A × 83 s = 1245 C.
8. A steady current of 3 A flows through a lamp for 69 s. Calculate the total electric charge transferred using Q = It.
207 C
Charge Q = current × time = 3 A × 69 s = 207 C.
9. A steady current of 3 A flows through a lamp for 25 s. Calculate the total electric charge transferred using Q = It.
75 C
Charge Q = current × time = 3 A × 25 s = 75 C.
10. A steady current of 4 A flows through a lamp for 18 s. Calculate the total electric charge transferred using Q = It.
72 C
Charge Q = current × time = 4 A × 18 s = 72 C.
11. A steady current of 13 A flows through a lamp for 69 s. Calculate the total electric charge transferred using Q = It.
897 C
Charge Q = current × time = 13 A × 69 s = 897 C.
12. A steady current of 3 A flows through a lamp for 14 s. Calculate the total electric charge transferred using Q = It.
42 C
Charge Q = current × time = 3 A × 14 s = 42 C.

12 questions · Seed 50 · Age guidance, not curriculum certification