Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 297 · 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.📏 Voltmeter or ammeter: which one is joined across a part? (a) ammeter (b) voltmeter
2. 2.📏 How many milliamperes (mA) is 1.62 A?
3. 3.True or false: the ammeter measures current. (a) False (b) True
4. 4.True or false: the voltmeter is joined in series. (a) True (b) False
5. 5.📏 Voltmeter or ammeter: which one measures current? (a) voltmeter (b) ammeter
6. 6.True or false: energy used each second is measured in ohms (Ω). (a) False (b) True
7. 7.True or false: how much a part resists is measured in amperes (A). (a) True (b) False
8. 8.📏 Which unit measures the push of a cell? (a) watt (W) (b) ampere (A) (c) ohm (Ω) (d) volt (V)
9. 9.📏 Which unit measures current? (a) ampere (A) (b) volt (V) (c) ohm (Ω) (d) watt (W)
10. 10.📏 Which unit measures energy used each second? (a) volt (V) (b) watt (W) (c) ohm (Ω) (d) ampere (A)
11. 11.📏 How many amperes (A) is 460 mA? =
12. 12.📏 How many ohms (Ω) is 0.4 kΩ?
13. 13.📏 How many kilo-ohms (kΩ) is 9100 Ω? =
14. 14.📏 How many watts (W) is 1.3 kW?
15. 15.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 1000 (b) 100 (c) 10 (d) 1024
16. 16.📏 How many kilo-ohms (kΩ) is 1000 Ω? =
17. 17.📏 How many amperes (A) is 1890 mA? =
18. 18.True or false: the ammeter is joined in series. (a) True (b) False
19. 19.Which of these is measured in volts (V)? (a) the flow of charge (b) how much a part resists (c) voltage (d) energy used each second
20. 20.True or false: how much a part resists is measured in ohms (Ω). (a) False (b) True
21. 21.📏 How many kilo-ohms (kΩ) is 5100 Ω? =
22. 22.True or false: the voltmeter measures current. (a) False (b) True
23. 23.True or false: the ammeter is joined across a part. (a) True (b) False
24. 24.📏 How many kilowatts (kW) is 4950 W? =
25. 25.📏 How many milliamperes (mA) is 2.07 A?
26. 26.📏 In the water-pipe picture of a circuit, current is like … (a) the water pressure (b) a narrow pipe (c) the pipe colour (d) the flow of water
27. 27.📏 How many kilo-ohms (kΩ) is 1500 Ω? =
28. 28.📏 How many ohms (Ω) is 4.6 kΩ?
29. 29.📏 How many ohms (Ω) is 8.9 kΩ?
30. 30.Which of these is measured in amperes (A)? (a) voltage (b) the flow of charge (c) how much a part resists (d) energy used each second
31. 31.📏 Which unit measures resistance? (a) volt (V) (b) ampere (A) (c) ohm (Ω) (d) watt (W)
32. 32.📏 Voltmeter or ammeter: which one measures voltage? (a) ammeter (b) voltmeter
33. 33.📏 In the water-pipe picture of a circuit, voltage is like … (a) the pipe colour (b) the tap handle (c) the water tank lid (d) the water pressure
34. 34.📏 How many kilowatts (kW) is 2050 W? =
35. 35.📏 Which unit measures how much a part resists? (a) volt (V) (b) ohm (Ω) (c) watt (W) (d) ampere (A)
36. 36.📏 How many amperes (A) is 880 mA? =
37. 37.📏 How many milliamperes (mA) is 1.59 A?
38. 38.📏 Which unit measures power? (a) ohm (Ω) (b) watt (W) (c) ampere (A) (d) volt (V)
39. 39.📏 How many amperes (A) is 1470 mA? =
40. 40.Which of these is measured in watts (W)? (a) voltage (b) how much a part resists (c) the push of a cell (d) power

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