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.

New variation Try interactive challenge Browse templates

Age band:Ages 13-15 Ages 16-18

Choose “Save as PDF” to keep a copy. Use your browser’s paper setting for A4 or Letter.

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 108 s. Calculate the total electric charge transferred using Q = It.
I = 9 A · t = 108 s
2. A steady current of 15 A flows through a lamp for 93 s. Calculate the total electric charge transferred using Q = It.
I = 15 A · t = 93 s
3. A steady current of 7 A flows through a lamp for 36 s. Calculate the total electric charge transferred using Q = It.
I = 7 A · t = 36 s
4. A steady current of 15 A flows through a lamp for 118 s. Calculate the total electric charge transferred using Q = It.
I = 15 A · t = 118 s
5. A steady current of 2 A flows through a lamp for 113 s. Calculate the total electric charge transferred using Q = It.
I = 2 A · t = 113 s
6. A steady current of 13 A flows through a lamp for 84 s. Calculate the total electric charge transferred using Q = It.
I = 13 A · t = 84 s
7. A steady current of 8 A flows through a lamp for 44 s. Calculate the total electric charge transferred using Q = It.
I = 8 A · t = 44 s
8. A steady current of 12 A flows through a lamp for 87 s. Calculate the total electric charge transferred using Q = It.
I = 12 A · t = 87 s
9. A steady current of 1 A flows through a lamp for 35 s. Calculate the total electric charge transferred using Q = It.
I = 1 A · t = 35 s
10. A steady current of 6 A flows through a lamp for 72 s. Calculate the total electric charge transferred using Q = It.
I = 6 A · t = 72 s
11. A steady current of 15 A flows through a lamp for 94 s. Calculate the total electric charge transferred using Q = It.
I = 15 A · t = 94 s
12. A steady current of 6 A flows through a lamp for 84 s. Calculate the total electric charge transferred using Q = It.
I = 6 A · t = 84 s

12 questions · Seed 104731 · 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 108 s. Calculate the total electric charge transferred using Q = It.
972 C
Charge Q = current × time = 9 A × 108 s = 972 C.
2. A steady current of 15 A flows through a lamp for 93 s. Calculate the total electric charge transferred using Q = It.
1395 C
Charge Q = current × time = 15 A × 93 s = 1395 C.
3. A steady current of 7 A flows through a lamp for 36 s. Calculate the total electric charge transferred using Q = It.
252 C
Charge Q = current × time = 7 A × 36 s = 252 C.
4. A steady current of 15 A flows through a lamp for 118 s. Calculate the total electric charge transferred using Q = It.
1770 C
Charge Q = current × time = 15 A × 118 s = 1770 C.
5. A steady current of 2 A flows through a lamp for 113 s. Calculate the total electric charge transferred using Q = It.
226 C
Charge Q = current × time = 2 A × 113 s = 226 C.
6. A steady current of 13 A flows through a lamp for 84 s. Calculate the total electric charge transferred using Q = It.
1092 C
Charge Q = current × time = 13 A × 84 s = 1092 C.
7. A steady current of 8 A flows through a lamp for 44 s. Calculate the total electric charge transferred using Q = It.
352 C
Charge Q = current × time = 8 A × 44 s = 352 C.
8. A steady current of 12 A flows through a lamp for 87 s. Calculate the total electric charge transferred using Q = It.
1044 C
Charge Q = current × time = 12 A × 87 s = 1044 C.
9. A steady current of 1 A flows through a lamp for 35 s. Calculate the total electric charge transferred using Q = It.
35 C
Charge Q = current × time = 1 A × 35 s = 35 C.
10. A steady current of 6 A flows through a lamp for 72 s. Calculate the total electric charge transferred using Q = It.
432 C
Charge Q = current × time = 6 A × 72 s = 432 C.
11. A steady current of 15 A flows through a lamp for 94 s. Calculate the total electric charge transferred using Q = It.
1410 C
Charge Q = current × time = 15 A × 94 s = 1410 C.
12. A steady current of 6 A flows through a lamp for 84 s. Calculate the total electric charge transferred using Q = It.
504 C
Charge Q = current × time = 6 A × 84 s = 504 C.

12 questions · Seed 104731 · 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 108 s. Calculate the total electric charge transferred using Q = It.
I = 9 A · t = 108 s
2. A steady current of 15 A flows through a lamp for 93 s. Calculate the total electric charge transferred using Q = It.
I = 15 A · t = 93 s
3. A steady current of 7 A flows through a lamp for 36 s. Calculate the total electric charge transferred using Q = It.
I = 7 A · t = 36 s
4. A steady current of 15 A flows through a lamp for 118 s. Calculate the total electric charge transferred using Q = It.
I = 15 A · t = 118 s
5. A steady current of 2 A flows through a lamp for 113 s. Calculate the total electric charge transferred using Q = It.
I = 2 A · t = 113 s
6. A steady current of 13 A flows through a lamp for 84 s. Calculate the total electric charge transferred using Q = It.
I = 13 A · t = 84 s
7. A steady current of 8 A flows through a lamp for 44 s. Calculate the total electric charge transferred using Q = It.
I = 8 A · t = 44 s
8. A steady current of 12 A flows through a lamp for 87 s. Calculate the total electric charge transferred using Q = It.
I = 12 A · t = 87 s
9. A steady current of 1 A flows through a lamp for 35 s. Calculate the total electric charge transferred using Q = It.
I = 1 A · t = 35 s
10. A steady current of 6 A flows through a lamp for 72 s. Calculate the total electric charge transferred using Q = It.
I = 6 A · t = 72 s
11. A steady current of 15 A flows through a lamp for 94 s. Calculate the total electric charge transferred using Q = It.
I = 15 A · t = 94 s
12. A steady current of 6 A flows through a lamp for 84 s. Calculate the total electric charge transferred using Q = It.
I = 6 A · t = 84 s

12 questions · Seed 104731 · 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 108 s. Calculate the total electric charge transferred using Q = It.
972 C
Charge Q = current × time = 9 A × 108 s = 972 C.
2. A steady current of 15 A flows through a lamp for 93 s. Calculate the total electric charge transferred using Q = It.
1395 C
Charge Q = current × time = 15 A × 93 s = 1395 C.
3. A steady current of 7 A flows through a lamp for 36 s. Calculate the total electric charge transferred using Q = It.
252 C
Charge Q = current × time = 7 A × 36 s = 252 C.
4. A steady current of 15 A flows through a lamp for 118 s. Calculate the total electric charge transferred using Q = It.
1770 C
Charge Q = current × time = 15 A × 118 s = 1770 C.
5. A steady current of 2 A flows through a lamp for 113 s. Calculate the total electric charge transferred using Q = It.
226 C
Charge Q = current × time = 2 A × 113 s = 226 C.
6. A steady current of 13 A flows through a lamp for 84 s. Calculate the total electric charge transferred using Q = It.
1092 C
Charge Q = current × time = 13 A × 84 s = 1092 C.
7. A steady current of 8 A flows through a lamp for 44 s. Calculate the total electric charge transferred using Q = It.
352 C
Charge Q = current × time = 8 A × 44 s = 352 C.
8. A steady current of 12 A flows through a lamp for 87 s. Calculate the total electric charge transferred using Q = It.
1044 C
Charge Q = current × time = 12 A × 87 s = 1044 C.
9. A steady current of 1 A flows through a lamp for 35 s. Calculate the total electric charge transferred using Q = It.
35 C
Charge Q = current × time = 1 A × 35 s = 35 C.
10. A steady current of 6 A flows through a lamp for 72 s. Calculate the total electric charge transferred using Q = It.
432 C
Charge Q = current × time = 6 A × 72 s = 432 C.
11. A steady current of 15 A flows through a lamp for 94 s. Calculate the total electric charge transferred using Q = It.
1410 C
Charge Q = current × time = 15 A × 94 s = 1410 C.
12. A steady current of 6 A flows through a lamp for 84 s. Calculate the total electric charge transferred using Q = It.
504 C
Charge Q = current × time = 6 A × 84 s = 504 C.

12 questions · Seed 104731 · Age guidance, not curriculum certification