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 7 A flows through a lamp for 34 s. Calculate the total electric charge transferred using Q = It.
I = 7 A · t = 34 s
2. A steady current of 14 A flows through a lamp for 22 s. Calculate the total electric charge transferred using Q = It.
I = 14 A · t = 22 s
3. A steady current of 12 A flows through a lamp for 47 s. Calculate the total electric charge transferred using Q = It.
I = 12 A · t = 47 s
4. A steady current of 5 A flows through a lamp for 69 s. Calculate the total electric charge transferred using Q = It.
I = 5 A · t = 69 s
5. A steady current of 14 A flows through a lamp for 118 s. Calculate the total electric charge transferred using Q = It.
I = 14 A · t = 118 s
6. A steady current of 6 A flows through a lamp for 100 s. Calculate the total electric charge transferred using Q = It.
I = 6 A · t = 100 s
7. A steady current of 9 A flows through a lamp for 94 s. Calculate the total electric charge transferred using Q = It.
I = 9 A · t = 94 s
8. A steady current of 8 A flows through a lamp for 78 s. Calculate the total electric charge transferred using Q = It.
I = 8 A · t = 78 s
9. A steady current of 8 A flows through a lamp for 26 s. Calculate the total electric charge transferred using Q = It.
I = 8 A · t = 26 s
10. A steady current of 15 A flows through a lamp for 53 s. Calculate the total electric charge transferred using Q = It.
I = 15 A · t = 53 s
11. A steady current of 6 A flows through a lamp for 63 s. Calculate the total electric charge transferred using Q = It.
I = 6 A · t = 63 s
12. A steady current of 6 A flows through a lamp for 76 s. Calculate the total electric charge transferred using Q = It.
I = 6 A · t = 76 s

12 questions · Seed 104736 · 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 7 A flows through a lamp for 34 s. Calculate the total electric charge transferred using Q = It.
238 C
Charge Q = current × time = 7 A × 34 s = 238 C.
2. A steady current of 14 A flows through a lamp for 22 s. Calculate the total electric charge transferred using Q = It.
308 C
Charge Q = current × time = 14 A × 22 s = 308 C.
3. A steady current of 12 A flows through a lamp for 47 s. Calculate the total electric charge transferred using Q = It.
564 C
Charge Q = current × time = 12 A × 47 s = 564 C.
4. A steady current of 5 A flows through a lamp for 69 s. Calculate the total electric charge transferred using Q = It.
345 C
Charge Q = current × time = 5 A × 69 s = 345 C.
5. A steady current of 14 A flows through a lamp for 118 s. Calculate the total electric charge transferred using Q = It.
1652 C
Charge Q = current × time = 14 A × 118 s = 1652 C.
6. A steady current of 6 A flows through a lamp for 100 s. Calculate the total electric charge transferred using Q = It.
600 C
Charge Q = current × time = 6 A × 100 s = 600 C.
7. A steady current of 9 A flows through a lamp for 94 s. Calculate the total electric charge transferred using Q = It.
846 C
Charge Q = current × time = 9 A × 94 s = 846 C.
8. A steady current of 8 A flows through a lamp for 78 s. Calculate the total electric charge transferred using Q = It.
624 C
Charge Q = current × time = 8 A × 78 s = 624 C.
9. A steady current of 8 A flows through a lamp for 26 s. Calculate the total electric charge transferred using Q = It.
208 C
Charge Q = current × time = 8 A × 26 s = 208 C.
10. A steady current of 15 A flows through a lamp for 53 s. Calculate the total electric charge transferred using Q = It.
795 C
Charge Q = current × time = 15 A × 53 s = 795 C.
11. A steady current of 6 A flows through a lamp for 63 s. Calculate the total electric charge transferred using Q = It.
378 C
Charge Q = current × time = 6 A × 63 s = 378 C.
12. A steady current of 6 A flows through a lamp for 76 s. Calculate the total electric charge transferred using Q = It.
456 C
Charge Q = current × time = 6 A × 76 s = 456 C.

12 questions · Seed 104736 · 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 7 A flows through a lamp for 34 s. Calculate the total electric charge transferred using Q = It.
I = 7 A · t = 34 s
2. A steady current of 14 A flows through a lamp for 22 s. Calculate the total electric charge transferred using Q = It.
I = 14 A · t = 22 s
3. A steady current of 12 A flows through a lamp for 47 s. Calculate the total electric charge transferred using Q = It.
I = 12 A · t = 47 s
4. A steady current of 5 A flows through a lamp for 69 s. Calculate the total electric charge transferred using Q = It.
I = 5 A · t = 69 s
5. A steady current of 14 A flows through a lamp for 118 s. Calculate the total electric charge transferred using Q = It.
I = 14 A · t = 118 s
6. A steady current of 6 A flows through a lamp for 100 s. Calculate the total electric charge transferred using Q = It.
I = 6 A · t = 100 s
7. A steady current of 9 A flows through a lamp for 94 s. Calculate the total electric charge transferred using Q = It.
I = 9 A · t = 94 s
8. A steady current of 8 A flows through a lamp for 78 s. Calculate the total electric charge transferred using Q = It.
I = 8 A · t = 78 s
9. A steady current of 8 A flows through a lamp for 26 s. Calculate the total electric charge transferred using Q = It.
I = 8 A · t = 26 s
10. A steady current of 15 A flows through a lamp for 53 s. Calculate the total electric charge transferred using Q = It.
I = 15 A · t = 53 s
11. A steady current of 6 A flows through a lamp for 63 s. Calculate the total electric charge transferred using Q = It.
I = 6 A · t = 63 s
12. A steady current of 6 A flows through a lamp for 76 s. Calculate the total electric charge transferred using Q = It.
I = 6 A · t = 76 s

12 questions · Seed 104736 · 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 7 A flows through a lamp for 34 s. Calculate the total electric charge transferred using Q = It.
238 C
Charge Q = current × time = 7 A × 34 s = 238 C.
2. A steady current of 14 A flows through a lamp for 22 s. Calculate the total electric charge transferred using Q = It.
308 C
Charge Q = current × time = 14 A × 22 s = 308 C.
3. A steady current of 12 A flows through a lamp for 47 s. Calculate the total electric charge transferred using Q = It.
564 C
Charge Q = current × time = 12 A × 47 s = 564 C.
4. A steady current of 5 A flows through a lamp for 69 s. Calculate the total electric charge transferred using Q = It.
345 C
Charge Q = current × time = 5 A × 69 s = 345 C.
5. A steady current of 14 A flows through a lamp for 118 s. Calculate the total electric charge transferred using Q = It.
1652 C
Charge Q = current × time = 14 A × 118 s = 1652 C.
6. A steady current of 6 A flows through a lamp for 100 s. Calculate the total electric charge transferred using Q = It.
600 C
Charge Q = current × time = 6 A × 100 s = 600 C.
7. A steady current of 9 A flows through a lamp for 94 s. Calculate the total electric charge transferred using Q = It.
846 C
Charge Q = current × time = 9 A × 94 s = 846 C.
8. A steady current of 8 A flows through a lamp for 78 s. Calculate the total electric charge transferred using Q = It.
624 C
Charge Q = current × time = 8 A × 78 s = 624 C.
9. A steady current of 8 A flows through a lamp for 26 s. Calculate the total electric charge transferred using Q = It.
208 C
Charge Q = current × time = 8 A × 26 s = 208 C.
10. A steady current of 15 A flows through a lamp for 53 s. Calculate the total electric charge transferred using Q = It.
795 C
Charge Q = current × time = 15 A × 53 s = 795 C.
11. A steady current of 6 A flows through a lamp for 63 s. Calculate the total electric charge transferred using Q = It.
378 C
Charge Q = current × time = 6 A × 63 s = 378 C.
12. A steady current of 6 A flows through a lamp for 76 s. Calculate the total electric charge transferred using Q = It.
456 C
Charge Q = current × time = 6 A × 76 s = 456 C.

12 questions · Seed 104736 · Age guidance, not curriculum certification