Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 111 · 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 amperes (A) is 1920 mA? =
2. 2.📏 Voltmeter or ammeter: which one is joined across a part? (a) voltmeter (b) ammeter
3. 3.📏 How many watts (W) is 2.6 kW?
4. 4.True or false: power is measured in amperes (A). (a) True (b) False
5. 5.Which of these is measured in amperes (A)? (a) the push of a cell (b) the flow of charge (c) voltage (d) how much a part resists
6. 6.📏 Voltmeter or ammeter: which one measures current? (a) voltmeter (b) ammeter
7. 7.📏 In the water-pipe picture of a circuit, voltage is like … (a) the tap handle (b) the water tank lid (c) the water pressure (d) the pipe colour
8. 8.True or false: resistance is measured in amperes (A). (a) False (b) True
9. 9.True or false: the voltmeter measures voltage. (a) True (b) False
10. 10.True or false: the voltmeter is joined in series. (a) True (b) False
11. 11.True or false: current is measured in amperes (A). (a) False (b) True
12. 12.📏 How many amperes (A) is 1590 mA? =
13. 13.📏 In the water-pipe picture of a circuit, resistance is like … (a) a bigger tank (b) a narrow pipe (c) the water pressure (d) the flow of water
14. 14.📏 How many ohms (Ω) is 3.8 kΩ?
15. 15.Which of these is measured in watts (W)? (a) current (b) how much a part resists (c) voltage (d) energy used each second
16. 16.Which of these is measured in ohms (Ω)? (a) voltage (b) resistance (c) energy used each second (d) the flow of charge
17. 17.True or false: how much a part resists is measured in ohms (Ω). (a) True (b) False
18. 18.True or false: voltage is measured in volts (V). (a) False (b) True
19. 19.📏 How many amperes (A) is 770 mA? =
20. 20.📏 Which unit measures resistance? (a) volt (V) (b) ampere (A) (c) watt (W) (d) ohm (Ω)
21. 21.Which of these is measured in volts (V)? (a) resistance (b) voltage (c) power (d) how much a part resists
22. 22.Which of these is measured in watts (W)? (a) power (b) voltage (c) how much a part resists (d) the flow of charge
23. 23.📏 Which unit measures the push of a cell? (a) ohm (Ω) (b) watt (W) (c) volt (V) (d) ampere (A)
24. 24.📏 Which unit measures voltage? (a) ohm (Ω) (b) volt (V) (c) watt (W) (d) ampere (A)
25. 25.True or false: the flow of charge is measured in amperes (A). (a) True (b) False
26. 26.📏 How many watts (W) is 1.4 kW?
27. 27.📏 How many kilo-ohms (kΩ) is 4500 Ω? =
28. 28.📏 How many milliamperes (mA) make 1 ampere? (a) 1000 (b) 100 (c) 10 (d) 60
29. 29.📏 How many watts (W) is 2.1 kW?
30. 30.📏 Which unit measures how much a part resists? (a) ohm (Ω) (b) volt (V) (c) ampere (A) (d) watt (W)
31. 31.True or false: the ammeter is joined across a part. (a) True (b) False
32. 32.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 10 (b) 1024 (c) 100 (d) 1000
33. 33.📏 How many watts (W) is 3.2 kW?
34. 34.True or false: power is measured in watts (W). (a) False (b) True
35. 35.True or false: resistance is measured in volts (V). (a) True (b) False
36. 36.Which of these is measured in amperes (A)? (a) power (b) energy used each second (c) voltage (d) current
37. 37.📏 Which unit measures energy used each second? (a) ohm (Ω) (b) watt (W) (c) volt (V) (d) ampere (A)
38. 38.📏 How many watts (W) is 2.5 kW?
39. 39.True or false: voltage is measured in amperes (A). (a) False (b) True
40. 40.📏 Voltmeter or ammeter: which one measures voltage? (a) ammeter (b) voltmeter

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