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 9 A flows through a lamp for 97 s. Calculate the total electric charge transferred using Q = It.
I = 9 A · t = 97 s
2. A steady current of 12 A flows through a lamp for 33 s. Calculate the total electric charge transferred using Q = It.
I = 12 A · t = 33 s
3. A steady current of 6 A flows through a lamp for 29 s. Calculate the total electric charge transferred using Q = It.
I = 6 A · t = 29 s
4. A steady current of 12 A flows through a lamp for 55 s. Calculate the total electric charge transferred using Q = It.
I = 12 A · t = 55 s
5. A steady current of 5 A flows through a lamp for 42 s. Calculate the total electric charge transferred using Q = It.
I = 5 A · t = 42 s
6. A steady current of 13 A flows through a lamp for 7 s. Calculate the total electric charge transferred using Q = It.
I = 13 A · t = 7 s
7. A steady current of 8 A flows through a lamp for 70 s. Calculate the total electric charge transferred using Q = It.
I = 8 A · t = 70 s
8. A steady current of 13 A flows through a lamp for 73 s. Calculate the total electric charge transferred using Q = It.
I = 13 A · t = 73 s
9. A steady current of 13 A flows through a lamp for 102 s. Calculate the total electric charge transferred using Q = It.
I = 13 A · t = 102 s
10. A steady current of 15 A flows through a lamp for 89 s. Calculate the total electric charge transferred using Q = It.
I = 15 A · t = 89 s
11. A steady current of 2 A flows through a lamp for 57 s. Calculate the total electric charge transferred using Q = It.
I = 2 A · t = 57 s
12. A steady current of 12 A flows through a lamp for 44 s. Calculate the total electric charge transferred using Q = It.
I = 12 A · t = 44 s

12 questions · Seed 53 · 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 9 A flows through a lamp for 97 s. Calculate the total electric charge transferred using Q = It.
873 C
Charge Q = current × time = 9 A × 97 s = 873 C.
2. A steady current of 12 A flows through a lamp for 33 s. Calculate the total electric charge transferred using Q = It.
396 C
Charge Q = current × time = 12 A × 33 s = 396 C.
3. A steady current of 6 A flows through a lamp for 29 s. Calculate the total electric charge transferred using Q = It.
174 C
Charge Q = current × time = 6 A × 29 s = 174 C.
4. A steady current of 12 A flows through a lamp for 55 s. Calculate the total electric charge transferred using Q = It.
660 C
Charge Q = current × time = 12 A × 55 s = 660 C.
5. A steady current of 5 A flows through a lamp for 42 s. Calculate the total electric charge transferred using Q = It.
210 C
Charge Q = current × time = 5 A × 42 s = 210 C.
6. A steady current of 13 A flows through a lamp for 7 s. Calculate the total electric charge transferred using Q = It.
91 C
Charge Q = current × time = 13 A × 7 s = 91 C.
7. A steady current of 8 A flows through a lamp for 70 s. Calculate the total electric charge transferred using Q = It.
560 C
Charge Q = current × time = 8 A × 70 s = 560 C.
8. A steady current of 13 A flows through a lamp for 73 s. Calculate the total electric charge transferred using Q = It.
949 C
Charge Q = current × time = 13 A × 73 s = 949 C.
9. A steady current of 13 A flows through a lamp for 102 s. Calculate the total electric charge transferred using Q = It.
1326 C
Charge Q = current × time = 13 A × 102 s = 1326 C.
10. A steady current of 15 A flows through a lamp for 89 s. Calculate the total electric charge transferred using Q = It.
1335 C
Charge Q = current × time = 15 A × 89 s = 1335 C.
11. A steady current of 2 A flows through a lamp for 57 s. Calculate the total electric charge transferred using Q = It.
114 C
Charge Q = current × time = 2 A × 57 s = 114 C.
12. A steady current of 12 A flows through a lamp for 44 s. Calculate the total electric charge transferred using Q = It.
528 C
Charge Q = current × time = 12 A × 44 s = 528 C.

12 questions · Seed 53 · 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 9 A flows through a lamp for 97 s. Calculate the total electric charge transferred using Q = It.
I = 9 A · t = 97 s
2. A steady current of 12 A flows through a lamp for 33 s. Calculate the total electric charge transferred using Q = It.
I = 12 A · t = 33 s
3. A steady current of 6 A flows through a lamp for 29 s. Calculate the total electric charge transferred using Q = It.
I = 6 A · t = 29 s
4. A steady current of 12 A flows through a lamp for 55 s. Calculate the total electric charge transferred using Q = It.
I = 12 A · t = 55 s
5. A steady current of 5 A flows through a lamp for 42 s. Calculate the total electric charge transferred using Q = It.
I = 5 A · t = 42 s
6. A steady current of 13 A flows through a lamp for 7 s. Calculate the total electric charge transferred using Q = It.
I = 13 A · t = 7 s
7. A steady current of 8 A flows through a lamp for 70 s. Calculate the total electric charge transferred using Q = It.
I = 8 A · t = 70 s
8. A steady current of 13 A flows through a lamp for 73 s. Calculate the total electric charge transferred using Q = It.
I = 13 A · t = 73 s
9. A steady current of 13 A flows through a lamp for 102 s. Calculate the total electric charge transferred using Q = It.
I = 13 A · t = 102 s
10. A steady current of 15 A flows through a lamp for 89 s. Calculate the total electric charge transferred using Q = It.
I = 15 A · t = 89 s
11. A steady current of 2 A flows through a lamp for 57 s. Calculate the total electric charge transferred using Q = It.
I = 2 A · t = 57 s
12. A steady current of 12 A flows through a lamp for 44 s. Calculate the total electric charge transferred using Q = It.
I = 12 A · t = 44 s

12 questions · Seed 53 · 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 9 A flows through a lamp for 97 s. Calculate the total electric charge transferred using Q = It.
873 C
Charge Q = current × time = 9 A × 97 s = 873 C.
2. A steady current of 12 A flows through a lamp for 33 s. Calculate the total electric charge transferred using Q = It.
396 C
Charge Q = current × time = 12 A × 33 s = 396 C.
3. A steady current of 6 A flows through a lamp for 29 s. Calculate the total electric charge transferred using Q = It.
174 C
Charge Q = current × time = 6 A × 29 s = 174 C.
4. A steady current of 12 A flows through a lamp for 55 s. Calculate the total electric charge transferred using Q = It.
660 C
Charge Q = current × time = 12 A × 55 s = 660 C.
5. A steady current of 5 A flows through a lamp for 42 s. Calculate the total electric charge transferred using Q = It.
210 C
Charge Q = current × time = 5 A × 42 s = 210 C.
6. A steady current of 13 A flows through a lamp for 7 s. Calculate the total electric charge transferred using Q = It.
91 C
Charge Q = current × time = 13 A × 7 s = 91 C.
7. A steady current of 8 A flows through a lamp for 70 s. Calculate the total electric charge transferred using Q = It.
560 C
Charge Q = current × time = 8 A × 70 s = 560 C.
8. A steady current of 13 A flows through a lamp for 73 s. Calculate the total electric charge transferred using Q = It.
949 C
Charge Q = current × time = 13 A × 73 s = 949 C.
9. A steady current of 13 A flows through a lamp for 102 s. Calculate the total electric charge transferred using Q = It.
1326 C
Charge Q = current × time = 13 A × 102 s = 1326 C.
10. A steady current of 15 A flows through a lamp for 89 s. Calculate the total electric charge transferred using Q = It.
1335 C
Charge Q = current × time = 15 A × 89 s = 1335 C.
11. A steady current of 2 A flows through a lamp for 57 s. Calculate the total electric charge transferred using Q = It.
114 C
Charge Q = current × time = 2 A × 57 s = 114 C.
12. A steady current of 12 A flows through a lamp for 44 s. Calculate the total electric charge transferred using Q = It.
528 C
Charge Q = current × time = 12 A × 44 s = 528 C.

12 questions · Seed 53 · Age guidance, not curriculum certification