Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 856 · 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.📏 Which unit measures energy used each second? (a) watt (W) (b) volt (V) (c) ampere (A) (d) ohm (Ω)
2. 2.📏 How many ohms (Ω) is 7.9 kΩ?
3. 3.📏 Voltmeter or ammeter: which one is joined in series? (a) voltmeter (b) ammeter
4. 4.Which of these is measured in amperes (A)? (a) the push of a cell (b) how much a part resists (c) energy used each second (d) current
5. 5.📏 In the water-pipe picture of a circuit, voltage is like … (a) the pipe colour (b) the water pressure (c) the tap handle (d) the water tank lid
6. 6.📏 How many kilo-ohms (kΩ) is 9100 Ω? =
7. 7.True or false: energy used each second is measured in volts (V). (a) False (b) True
8. 8.True or false: the ammeter measures current. (a) False (b) True
9. 9.📏 Voltmeter or ammeter: which one measures current? (a) voltmeter (b) ammeter
10. 10.Which of these is measured in watts (W)? (a) the push of a cell (b) current (c) voltage (d) power
11. 11.📏 How many milliamperes (mA) is 0.84 A?
12. 12.True or false: voltage is measured in volts (V). (a) True (b) False
13. 13.Which of these is measured in volts (V)? (a) power (b) how much a part resists (c) voltage (d) energy used each second
14. 14.True or false: current is measured in watts (W). (a) False (b) True
15. 15.Which of these is measured in ohms (Ω)? (a) the flow of charge (b) energy used each second (c) resistance (d) the push of a cell
16. 16.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 100 (b) 1000 (c) 1024 (d) 10
17. 17.📏 Which unit measures how much a part resists? (a) ampere (A) (b) volt (V) (c) ohm (Ω) (d) watt (W)
18. 18.📏 Which unit measures voltage? (a) volt (V) (b) ampere (A) (c) ohm (Ω) (d) watt (W)
19. 19.📏 How many ohms (Ω) is 2.7 kΩ?
20. 20.📏 Voltmeter or ammeter: which one is joined across a part? (a) ammeter (b) voltmeter
21. 21.True or false: energy used each second is measured in watts (W). (a) True (b) False
22. 22.📏 How many milliamperes (mA) make 1 ampere? (a) 1000 (b) 100 (c) 10 (d) 60
23. 23.📏 How many watts (W) is 4.8 kW?
24. 24.📏 Which unit measures the push of a cell? (a) watt (W) (b) ampere (A) (c) ohm (Ω) (d) volt (V)
25. 25.📏 How many watts (W) is 0.5 kW?
26. 26.📏 How many ohms (Ω) is 8.1 kΩ?
27. 27.📏 How many amperes (A) is 1080 mA? =
28. 28.Which of these is measured in watts (W)? (a) energy used each second (b) voltage (c) current (d) how much a part resists
29. 29.📏 How many watts (W) is 2.1 kW?
30. 30.True or false: the voltmeter measures voltage. (a) False (b) True
31. 31.📏 How many amperes (A) is 700 mA? =
32. 32.True or false: the voltmeter is joined in series. (a) True (b) False
33. 33.True or false: the ammeter is joined across a part. (a) True (b) False
34. 34.True or false: resistance is measured in volts (V). (a) True (b) False
35. 35.True or false: the push of a cell is measured in watts (W). (a) False (b) True
36. 36.📏 How many kilo-ohms (kΩ) is 1800 Ω? =
37. 37.📏 How many ohms (Ω) is 7.7 kΩ?
38. 38.📏 How many ohms (Ω) is 8.4 kΩ?
39. 39.📏 Voltmeter or ammeter: which one measures voltage? (a) ammeter (b) voltmeter
40. 40.True or false: power is measured in ohms (Ω). (a) False (b) True

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