Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 574 · 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 kilo-ohms (kΩ) is 9600 Ω? =
2. 2.📏 Voltmeter or ammeter: which one measures voltage? (a) voltmeter (b) ammeter
3. 3.📏 Which unit measures how much a part resists? (a) watt (W) (b) ohm (Ω) (c) volt (V) (d) ampere (A)
4. 4.True or false: the ammeter is joined in series. (a) True (b) False
5. 5.📏 Which unit measures voltage? (a) volt (V) (b) ohm (Ω) (c) watt (W) (d) ampere (A)
6. 6.📏 Which unit measures the push of a cell? (a) volt (V) (b) ampere (A) (c) ohm (Ω) (d) watt (W)
7. 7.True or false: the push of a cell is measured in volts (V). (a) True (b) False
8. 8.Which of these is measured in ohms (Ω)? (a) power (b) the push of a cell (c) resistance (d) voltage
9. 9.📏 How many milliamperes (mA) is 0.09 A?
10. 10.📏 Which unit measures energy used each second? (a) ampere (A) (b) volt (V) (c) watt (W) (d) ohm (Ω)
11. 11.📏 How many watts (W) is 4.4 kW?
12. 12.True or false: the ammeter measures voltage. (a) False (b) True
13. 13.📏 Which unit measures resistance? (a) volt (V) (b) ampere (A) (c) watt (W) (d) ohm (Ω)
14. 14.📏 Voltmeter or ammeter: which one measures current? (a) voltmeter (b) ammeter
15. 15.Which of these is measured in amperes (A)? (a) energy used each second (b) the flow of charge (c) power (d) resistance
16. 16.Which of these is measured in watts (W)? (a) voltage (b) how much a part resists (c) current (d) power
17. 17.📏 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
18. 18.True or false: voltage is measured in watts (W). (a) False (b) True
19. 19.True or false: energy used each second is measured in watts (W). (a) True (b) False
20. 20.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 100 (b) 10 (c) 1000 (d) 1024
21. 21.📏 Which unit measures power? (a) volt (V) (b) ohm (Ω) (c) watt (W) (d) ampere (A)
22. 22.📏 Which unit measures current? (a) ohm (Ω) (b) watt (W) (c) volt (V) (d) ampere (A)
23. 23.True or false: resistance is measured in ohms (Ω). (a) True (b) False
24. 24.True or false: current is measured in amperes (A). (a) True (b) False
25. 25.📏 How many kilo-ohms (kΩ) is 7300 Ω? =
26. 26.📏 How many kilo-ohms (kΩ) is 5900 Ω? =
27. 27.Which of these is measured in amperes (A)? (a) voltage (b) current (c) power (d) the push of a cell
28. 28.True or false: energy used each second is measured in ohms (Ω). (a) True (b) False
29. 29.Which of these is measured in volts (V)? (a) voltage (b) current (c) resistance (d) energy used each second
30. 30.Which of these is measured in ohms (Ω)? (a) voltage (b) how much a part resists (c) the push of a cell (d) current
31. 31.📏 How many amperes (A) is 1220 mA? =
32. 32.Which of these is measured in watts (W)? (a) energy used each second (b) how much a part resists (c) the flow of charge (d) the push of a cell
33. 33.📏 How many amperes (A) is 1490 mA? =
34. 34.📏 How many amperes (A) is 1520 mA? =
35. 35.📏 In the water-pipe picture of a circuit, resistance is like … (a) the flow of water (b) the water pressure (c) a bigger tank (d) a narrow pipe
36. 36.📏 How many amperes (A) is 1780 mA? =
37. 37.📏 Voltmeter or ammeter: which one is joined in series? (a) voltmeter (b) ammeter
38. 38.True or false: the voltmeter is joined across a part. (a) False (b) True
39. 39.True or false: the voltmeter is joined in series. (a) False (b) True
40. 40.📏 How many amperes (A) is 2500 mA? =

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