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 2 A flows through a lamp for 38 s. Calculate the total electric charge transferred using Q = It.
I = 2 A · t = 38 s
2. A steady current of 2 A flows through a lamp for 49 s. Calculate the total electric charge transferred using Q = It.
I = 2 A · t = 49 s
3. A steady current of 15 A flows through a lamp for 31 s. Calculate the total electric charge transferred using Q = It.
I = 15 A · t = 31 s
4. A steady current of 3 A flows through a lamp for 49 s. Calculate the total electric charge transferred using Q = It.
I = 3 A · t = 49 s
5. A steady current of 14 A flows through a lamp for 16 s. Calculate the total electric charge transferred using Q = It.
I = 14 A · t = 16 s
6. A steady current of 14 A flows through a lamp for 17 s. Calculate the total electric charge transferred using Q = It.
I = 14 A · t = 17 s
7. A steady current of 10 A flows through a lamp for 119 s. Calculate the total electric charge transferred using Q = It.
I = 10 A · t = 119 s
8. A steady current of 9 A flows through a lamp for 19 s. Calculate the total electric charge transferred using Q = It.
I = 9 A · t = 19 s
9. A steady current of 6 A flows through a lamp for 32 s. Calculate the total electric charge transferred using Q = It.
I = 6 A · t = 32 s
10. A steady current of 13 A flows through a lamp for 97 s. Calculate the total electric charge transferred using Q = It.
I = 13 A · t = 97 s
11. A steady current of 4 A flows through a lamp for 90 s. Calculate the total electric charge transferred using Q = It.
I = 4 A · t = 90 s
12. A steady current of 14 A flows through a lamp for 80 s. Calculate the total electric charge transferred using Q = It.
I = 14 A · t = 80 s

12 questions · Seed 104733 · 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 2 A flows through a lamp for 38 s. Calculate the total electric charge transferred using Q = It.
76 C
Charge Q = current × time = 2 A × 38 s = 76 C.
2. A steady current of 2 A flows through a lamp for 49 s. Calculate the total electric charge transferred using Q = It.
98 C
Charge Q = current × time = 2 A × 49 s = 98 C.
3. A steady current of 15 A flows through a lamp for 31 s. Calculate the total electric charge transferred using Q = It.
465 C
Charge Q = current × time = 15 A × 31 s = 465 C.
4. A steady current of 3 A flows through a lamp for 49 s. Calculate the total electric charge transferred using Q = It.
147 C
Charge Q = current × time = 3 A × 49 s = 147 C.
5. A steady current of 14 A flows through a lamp for 16 s. Calculate the total electric charge transferred using Q = It.
224 C
Charge Q = current × time = 14 A × 16 s = 224 C.
6. A steady current of 14 A flows through a lamp for 17 s. Calculate the total electric charge transferred using Q = It.
238 C
Charge Q = current × time = 14 A × 17 s = 238 C.
7. A steady current of 10 A flows through a lamp for 119 s. Calculate the total electric charge transferred using Q = It.
1190 C
Charge Q = current × time = 10 A × 119 s = 1190 C.
8. A steady current of 9 A flows through a lamp for 19 s. Calculate the total electric charge transferred using Q = It.
171 C
Charge Q = current × time = 9 A × 19 s = 171 C.
9. A steady current of 6 A flows through a lamp for 32 s. Calculate the total electric charge transferred using Q = It.
192 C
Charge Q = current × time = 6 A × 32 s = 192 C.
10. A steady current of 13 A flows through a lamp for 97 s. Calculate the total electric charge transferred using Q = It.
1261 C
Charge Q = current × time = 13 A × 97 s = 1261 C.
11. A steady current of 4 A flows through a lamp for 90 s. Calculate the total electric charge transferred using Q = It.
360 C
Charge Q = current × time = 4 A × 90 s = 360 C.
12. A steady current of 14 A flows through a lamp for 80 s. Calculate the total electric charge transferred using Q = It.
1120 C
Charge Q = current × time = 14 A × 80 s = 1120 C.

12 questions · Seed 104733 · 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 2 A flows through a lamp for 38 s. Calculate the total electric charge transferred using Q = It.
I = 2 A · t = 38 s
2. A steady current of 2 A flows through a lamp for 49 s. Calculate the total electric charge transferred using Q = It.
I = 2 A · t = 49 s
3. A steady current of 15 A flows through a lamp for 31 s. Calculate the total electric charge transferred using Q = It.
I = 15 A · t = 31 s
4. A steady current of 3 A flows through a lamp for 49 s. Calculate the total electric charge transferred using Q = It.
I = 3 A · t = 49 s
5. A steady current of 14 A flows through a lamp for 16 s. Calculate the total electric charge transferred using Q = It.
I = 14 A · t = 16 s
6. A steady current of 14 A flows through a lamp for 17 s. Calculate the total electric charge transferred using Q = It.
I = 14 A · t = 17 s
7. A steady current of 10 A flows through a lamp for 119 s. Calculate the total electric charge transferred using Q = It.
I = 10 A · t = 119 s
8. A steady current of 9 A flows through a lamp for 19 s. Calculate the total electric charge transferred using Q = It.
I = 9 A · t = 19 s
9. A steady current of 6 A flows through a lamp for 32 s. Calculate the total electric charge transferred using Q = It.
I = 6 A · t = 32 s
10. A steady current of 13 A flows through a lamp for 97 s. Calculate the total electric charge transferred using Q = It.
I = 13 A · t = 97 s
11. A steady current of 4 A flows through a lamp for 90 s. Calculate the total electric charge transferred using Q = It.
I = 4 A · t = 90 s
12. A steady current of 14 A flows through a lamp for 80 s. Calculate the total electric charge transferred using Q = It.
I = 14 A · t = 80 s

12 questions · Seed 104733 · 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 2 A flows through a lamp for 38 s. Calculate the total electric charge transferred using Q = It.
76 C
Charge Q = current × time = 2 A × 38 s = 76 C.
2. A steady current of 2 A flows through a lamp for 49 s. Calculate the total electric charge transferred using Q = It.
98 C
Charge Q = current × time = 2 A × 49 s = 98 C.
3. A steady current of 15 A flows through a lamp for 31 s. Calculate the total electric charge transferred using Q = It.
465 C
Charge Q = current × time = 15 A × 31 s = 465 C.
4. A steady current of 3 A flows through a lamp for 49 s. Calculate the total electric charge transferred using Q = It.
147 C
Charge Q = current × time = 3 A × 49 s = 147 C.
5. A steady current of 14 A flows through a lamp for 16 s. Calculate the total electric charge transferred using Q = It.
224 C
Charge Q = current × time = 14 A × 16 s = 224 C.
6. A steady current of 14 A flows through a lamp for 17 s. Calculate the total electric charge transferred using Q = It.
238 C
Charge Q = current × time = 14 A × 17 s = 238 C.
7. A steady current of 10 A flows through a lamp for 119 s. Calculate the total electric charge transferred using Q = It.
1190 C
Charge Q = current × time = 10 A × 119 s = 1190 C.
8. A steady current of 9 A flows through a lamp for 19 s. Calculate the total electric charge transferred using Q = It.
171 C
Charge Q = current × time = 9 A × 19 s = 171 C.
9. A steady current of 6 A flows through a lamp for 32 s. Calculate the total electric charge transferred using Q = It.
192 C
Charge Q = current × time = 6 A × 32 s = 192 C.
10. A steady current of 13 A flows through a lamp for 97 s. Calculate the total electric charge transferred using Q = It.
1261 C
Charge Q = current × time = 13 A × 97 s = 1261 C.
11. A steady current of 4 A flows through a lamp for 90 s. Calculate the total electric charge transferred using Q = It.
360 C
Charge Q = current × time = 4 A × 90 s = 360 C.
12. A steady current of 14 A flows through a lamp for 80 s. Calculate the total electric charge transferred using Q = It.
1120 C
Charge Q = current × time = 14 A × 80 s = 1120 C.

12 questions · Seed 104733 · Age guidance, not curriculum certification