Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 753 · 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.True or false: the ammeter measures current. (a) False (b) True
2. 2.Which of these is measured in volts (V)? (a) energy used each second (b) resistance (c) voltage (d) current
3. 3.True or false: current is measured in watts (W). (a) False (b) True
4. 4.📏 Which unit measures energy used each second? (a) ohm (Ω) (b) watt (W) (c) volt (V) (d) ampere (A)
5. 5.True or false: the voltmeter is joined across a part. (a) False (b) True
6. 6.📏 How many ohms (Ω) is 2.2 kΩ?
7. 7.True or false: the ammeter is joined across a part. (a) True (b) False
8. 8.📏 Voltmeter or ammeter: which one measures voltage? (a) ammeter (b) voltmeter
9. 9.📏 Voltmeter or ammeter: which one measures current? (a) ammeter (b) voltmeter
10. 10.📏 Voltmeter or ammeter: which one is joined across a part? (a) ammeter (b) voltmeter
11. 11.📏 In the water-pipe picture of a circuit, voltage is like … (a) the tap handle (b) the water pressure (c) the pipe colour (d) the water tank lid
12. 12.📏 Which unit measures current? (a) ohm (Ω) (b) watt (W) (c) ampere (A) (d) volt (V)
13. 13.True or false: the voltmeter is joined in series. (a) False (b) True
14. 14.True or false: power is measured in volts (V). (a) True (b) False
15. 15.📏 Which unit measures voltage? (a) ampere (A) (b) ohm (Ω) (c) watt (W) (d) volt (V)
16. 16.Which of these is measured in amperes (A)? (a) current (b) energy used each second (c) resistance (d) voltage
17. 17.Which of these is measured in volts (V)? (a) resistance (b) how much a part resists (c) power (d) the push of a cell
18. 18.📏 Which unit measures the push of a cell? (a) ohm (Ω) (b) ampere (A) (c) watt (W) (d) volt (V)
19. 19.📏 How many kilowatts (kW) is 2550 W? =
20. 20.📏 How many milliamperes (mA) is 0.38 A?
21. 21.True or false: energy used each second is measured in amperes (A). (a) False (b) True
22. 22.True or false: current is measured in volts (V). (a) True (b) False
23. 23.📏 How many amperes (A) is 1580 mA? =
24. 24.True or false: the push of a cell is measured in amperes (A). (a) True (b) False
25. 25.True or false: how much a part resists is measured in volts (V). (a) True (b) False
26. 26.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 1024 (b) 1000 (c) 100 (d) 10
27. 27.📏 Which unit measures resistance? (a) watt (W) (b) ampere (A) (c) volt (V) (d) ohm (Ω)
28. 28.📏 How many watts (W) is 1.9 kW?
29. 29.Which of these is measured in ohms (Ω)? (a) the flow of charge (b) energy used each second (c) the push of a cell (d) resistance
30. 30.True or false: voltage is measured in ohms (Ω). (a) True (b) False
31. 31.📏 How many milliamperes (mA) is 0.72 A?
32. 32.📏 How many kilowatts (kW) is 3900 W? =
33. 33.📏 How many milliamperes (mA) is 2.82 A?
34. 34.📏 How many kilo-ohms (kΩ) is 7000 Ω? =
35. 35.📏 How many ohms (Ω) is 2.5 kΩ?
36. 36.📏 How many ohms (Ω) is 3.5 kΩ?
37. 37.True or false: energy used each second is measured in watts (W). (a) False (b) True
38. 38.Which of these is measured in watts (W)? (a) how much a part resists (b) power (c) voltage (d) resistance
39. 39.📏 How many watts (W) is 0.2 kW?
40. 40.True or false: current is measured in amperes (A). (a) False (b) True

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