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 11 A flows through a lamp for 28 s. Calculate the total electric charge transferred using Q = It.
I = 11 A · t = 28 s
2. A steady current of 11 A flows through a lamp for 100 s. Calculate the total electric charge transferred using Q = It.
I = 11 A · t = 100 s
3. A steady current of 15 A flows through a lamp for 39 s. Calculate the total electric charge transferred using Q = It.
I = 15 A · t = 39 s
4. A steady current of 4 A flows through a lamp for 38 s. Calculate the total electric charge transferred using Q = It.
I = 4 A · t = 38 s
5. A steady current of 9 A flows through a lamp for 12 s. Calculate the total electric charge transferred using Q = It.
I = 9 A · t = 12 s
6. A steady current of 3 A flows through a lamp for 55 s. Calculate the total electric charge transferred using Q = It.
I = 3 A · t = 55 s
7. A steady current of 4 A flows through a lamp for 115 s. Calculate the total electric charge transferred using Q = It.
I = 4 A · t = 115 s
8. A steady current of 11 A flows through a lamp for 32 s. Calculate the total electric charge transferred using Q = It.
I = 11 A · t = 32 s
9. A steady current of 7 A flows through a lamp for 7 s. Calculate the total electric charge transferred using Q = It.
I = 7 A · t = 7 s
10. A steady current of 6 A flows through a lamp for 22 s. Calculate the total electric charge transferred using Q = It.
I = 6 A · t = 22 s
11. A steady current of 15 A flows through a lamp for 32 s. Calculate the total electric charge transferred using Q = It.
I = 15 A · t = 32 s
12. A steady current of 2 A flows through a lamp for 88 s. Calculate the total electric charge transferred using Q = It.
I = 2 A · t = 88 s

12 questions · Seed 104732 · 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 11 A flows through a lamp for 28 s. Calculate the total electric charge transferred using Q = It.
308 C
Charge Q = current × time = 11 A × 28 s = 308 C.
2. A steady current of 11 A flows through a lamp for 100 s. Calculate the total electric charge transferred using Q = It.
1100 C
Charge Q = current × time = 11 A × 100 s = 1100 C.
3. A steady current of 15 A flows through a lamp for 39 s. Calculate the total electric charge transferred using Q = It.
585 C
Charge Q = current × time = 15 A × 39 s = 585 C.
4. A steady current of 4 A flows through a lamp for 38 s. Calculate the total electric charge transferred using Q = It.
152 C
Charge Q = current × time = 4 A × 38 s = 152 C.
5. A steady current of 9 A flows through a lamp for 12 s. Calculate the total electric charge transferred using Q = It.
108 C
Charge Q = current × time = 9 A × 12 s = 108 C.
6. A steady current of 3 A flows through a lamp for 55 s. Calculate the total electric charge transferred using Q = It.
165 C
Charge Q = current × time = 3 A × 55 s = 165 C.
7. A steady current of 4 A flows through a lamp for 115 s. Calculate the total electric charge transferred using Q = It.
460 C
Charge Q = current × time = 4 A × 115 s = 460 C.
8. A steady current of 11 A flows through a lamp for 32 s. Calculate the total electric charge transferred using Q = It.
352 C
Charge Q = current × time = 11 A × 32 s = 352 C.
9. A steady current of 7 A flows through a lamp for 7 s. Calculate the total electric charge transferred using Q = It.
49 C
Charge Q = current × time = 7 A × 7 s = 49 C.
10. A steady current of 6 A flows through a lamp for 22 s. Calculate the total electric charge transferred using Q = It.
132 C
Charge Q = current × time = 6 A × 22 s = 132 C.
11. A steady current of 15 A flows through a lamp for 32 s. Calculate the total electric charge transferred using Q = It.
480 C
Charge Q = current × time = 15 A × 32 s = 480 C.
12. A steady current of 2 A flows through a lamp for 88 s. Calculate the total electric charge transferred using Q = It.
176 C
Charge Q = current × time = 2 A × 88 s = 176 C.

12 questions · Seed 104732 · 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 11 A flows through a lamp for 28 s. Calculate the total electric charge transferred using Q = It.
I = 11 A · t = 28 s
2. A steady current of 11 A flows through a lamp for 100 s. Calculate the total electric charge transferred using Q = It.
I = 11 A · t = 100 s
3. A steady current of 15 A flows through a lamp for 39 s. Calculate the total electric charge transferred using Q = It.
I = 15 A · t = 39 s
4. A steady current of 4 A flows through a lamp for 38 s. Calculate the total electric charge transferred using Q = It.
I = 4 A · t = 38 s
5. A steady current of 9 A flows through a lamp for 12 s. Calculate the total electric charge transferred using Q = It.
I = 9 A · t = 12 s
6. A steady current of 3 A flows through a lamp for 55 s. Calculate the total electric charge transferred using Q = It.
I = 3 A · t = 55 s
7. A steady current of 4 A flows through a lamp for 115 s. Calculate the total electric charge transferred using Q = It.
I = 4 A · t = 115 s
8. A steady current of 11 A flows through a lamp for 32 s. Calculate the total electric charge transferred using Q = It.
I = 11 A · t = 32 s
9. A steady current of 7 A flows through a lamp for 7 s. Calculate the total electric charge transferred using Q = It.
I = 7 A · t = 7 s
10. A steady current of 6 A flows through a lamp for 22 s. Calculate the total electric charge transferred using Q = It.
I = 6 A · t = 22 s
11. A steady current of 15 A flows through a lamp for 32 s. Calculate the total electric charge transferred using Q = It.
I = 15 A · t = 32 s
12. A steady current of 2 A flows through a lamp for 88 s. Calculate the total electric charge transferred using Q = It.
I = 2 A · t = 88 s

12 questions · Seed 104732 · 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 11 A flows through a lamp for 28 s. Calculate the total electric charge transferred using Q = It.
308 C
Charge Q = current × time = 11 A × 28 s = 308 C.
2. A steady current of 11 A flows through a lamp for 100 s. Calculate the total electric charge transferred using Q = It.
1100 C
Charge Q = current × time = 11 A × 100 s = 1100 C.
3. A steady current of 15 A flows through a lamp for 39 s. Calculate the total electric charge transferred using Q = It.
585 C
Charge Q = current × time = 15 A × 39 s = 585 C.
4. A steady current of 4 A flows through a lamp for 38 s. Calculate the total electric charge transferred using Q = It.
152 C
Charge Q = current × time = 4 A × 38 s = 152 C.
5. A steady current of 9 A flows through a lamp for 12 s. Calculate the total electric charge transferred using Q = It.
108 C
Charge Q = current × time = 9 A × 12 s = 108 C.
6. A steady current of 3 A flows through a lamp for 55 s. Calculate the total electric charge transferred using Q = It.
165 C
Charge Q = current × time = 3 A × 55 s = 165 C.
7. A steady current of 4 A flows through a lamp for 115 s. Calculate the total electric charge transferred using Q = It.
460 C
Charge Q = current × time = 4 A × 115 s = 460 C.
8. A steady current of 11 A flows through a lamp for 32 s. Calculate the total electric charge transferred using Q = It.
352 C
Charge Q = current × time = 11 A × 32 s = 352 C.
9. A steady current of 7 A flows through a lamp for 7 s. Calculate the total electric charge transferred using Q = It.
49 C
Charge Q = current × time = 7 A × 7 s = 49 C.
10. A steady current of 6 A flows through a lamp for 22 s. Calculate the total electric charge transferred using Q = It.
132 C
Charge Q = current × time = 6 A × 22 s = 132 C.
11. A steady current of 15 A flows through a lamp for 32 s. Calculate the total electric charge transferred using Q = It.
480 C
Charge Q = current × time = 15 A × 32 s = 480 C.
12. A steady current of 2 A flows through a lamp for 88 s. Calculate the total electric charge transferred using Q = It.
176 C
Charge Q = current × time = 2 A × 88 s = 176 C.

12 questions · Seed 104732 · Age guidance, not curriculum certification