Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 715 · 40 questions

Remember (Push, flow, resist): Voltage → volts (V), current → amperes (A), resistance → ohms (Ω), power → watts (W). milli (m) = ÷ 1000 and kilo (k) = × 1000: 250 mA = 0.25 A, 2.2 kΩ = 2200 Ω. Voltmeter across a part; ammeter in series.

1. 1.📏 How many milliamperes (mA) is 2.23 A?
2. 2.📏 Which unit measures resistance? (a) ampere (A) (b) watt (W) (c) ohm (Ω) (d) volt (V)
3. 3.True or false: the push of a cell is measured in ohms (Ω). (a) False (b) True
4. 4.True or false: how much a part resists is measured in ohms (Ω). (a) False (b) True
5. 5.True or false: the flow of charge is measured in amperes (A). (a) True (b) False
6. 6.📏 How many milliamperes (mA) is 2.86 A?
7. 7.True or false: voltage is measured in volts (V). (a) True (b) False
8. 8.📏 Which unit measures the push of a cell? (a) volt (V) (b) ampere (A) (c) ohm (Ω) (d) watt (W)
9. 9.True or false: the voltmeter is joined in series. (a) True (b) False
10. 10.📏 How many watts (W) is 3.7 kW?
11. 11.📏 How many kilo-ohms (kΩ) is 1600 Ω? =
12. 12.📏 How many milliamperes (mA) is 0.19 A?
13. 13.📏 How many watts (W) is 1.4 kW?
14. 14.📏 Which unit measures power? (a) ampere (A) (b) ohm (Ω) (c) volt (V) (d) watt (W)
15. 15.True or false: resistance is measured in watts (W). (a) True (b) False
16. 16.📏 Which unit measures current? (a) ampere (A) (b) volt (V) (c) watt (W) (d) ohm (Ω)
17. 17.📏 How many ohms (Ω) is 9.7 kΩ?
18. 18.📏 How many kilo-ohms (kΩ) is 4800 Ω? =
19. 19.True or false: the voltmeter is joined across a part. (a) False (b) True
20. 20.Which of these is measured in amperes (A)? (a) the push of a cell (b) power (c) voltage (d) the flow of charge
21. 21.📏 Voltmeter or ammeter: which one is joined across a part? (a) ammeter (b) voltmeter
22. 22.True or false: current is measured in amperes (A). (a) True (b) False
23. 23.📏 How many kilowatts (kW) is 700 W? =
24. 24.Which of these is measured in volts (V)? (a) power (b) resistance (c) the push of a cell (d) the flow of charge
25. 25.Which of these is measured in ohms (Ω)? (a) how much a part resists (b) the push of a cell (c) voltage (d) current
26. 26.True or false: the ammeter is joined across a part. (a) True (b) False
27. 27.Which of these is measured in amperes (A)? (a) how much a part resists (b) energy used each second (c) power (d) current
28. 28.📏 How many amperes (A) is 1540 mA? =
29. 29.True or false: the voltmeter measures voltage. (a) True (b) False
30. 30.📏 In the water-pipe picture of a circuit, voltage is like … (a) the tap handle (b) the pipe colour (c) the water tank lid (d) the water pressure
31. 31.📏 How many milliamperes (mA) is 1.24 A?
32. 32.True or false: the ammeter measures voltage. (a) True (b) False
33. 33.True or false: resistance is measured in amperes (A). (a) False (b) True
34. 34.📏 Voltmeter or ammeter: which one measures voltage? (a) voltmeter (b) ammeter
35. 35.True or false: the ammeter is joined in series. (a) True (b) False
36. 36.Which of these is measured in watts (W)? (a) energy used each second (b) the push of a cell (c) the flow of charge (d) how much a part resists
37. 37.Which of these is measured in ohms (Ω)? (a) power (b) voltage (c) the push of a cell (d) resistance
38. 38.📏 How many amperes (A) is 1360 mA? =
39. 39.📏 Voltmeter or ammeter: which one measures current? (a) ammeter (b) voltmeter
40. 40.📏 How many milliamperes (mA) is 2.57 A?

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