Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 639 · 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 voltage. (a) False (b) True
2. 2.True or false: how much a part resists is measured in watts (W). (a) True (b) False
3. 3.Which of these is measured in volts (V)? (a) energy used each second (b) the flow of charge (c) current (d) voltage
4. 4.Which of these is measured in ohms (Ω)? (a) voltage (b) the flow of charge (c) energy used each second (d) how much a part resists
5. 5.Which of these is measured in volts (V)? (a) resistance (b) how much a part resists (c) energy used each second (d) the push of a cell
6. 6.📏 Which unit measures energy used each second? (a) ohm (Ω) (b) volt (V) (c) ampere (A) (d) watt (W)
7. 7.📏 Which unit measures current? (a) watt (W) (b) volt (V) (c) ohm (Ω) (d) ampere (A)
8. 8.True or false: energy used each second is measured in watts (W). (a) False (b) True
9. 9.📏 Which unit measures resistance? (a) ampere (A) (b) ohm (Ω) (c) volt (V) (d) watt (W)
10. 10.📏 Voltmeter or ammeter: which one measures voltage? (a) ammeter (b) voltmeter
11. 11.📏 Which unit measures voltage? (a) watt (W) (b) volt (V) (c) ohm (Ω) (d) ampere (A)
12. 12.📏 In the water-pipe picture of a circuit, resistance is like … (a) the flow of water (b) a narrow pipe (c) a bigger tank (d) the water pressure
13. 13.📏 Voltmeter or ammeter: which one measures current? (a) ammeter (b) voltmeter
14. 14.True or false: the flow of charge is measured in volts (V). (a) True (b) False
15. 15.📏 How many kilo-ohms (kΩ) is 8800 Ω? =
16. 16.📏 How many watts (W) is 4.3 kW?
17. 17.📏 Voltmeter or ammeter: which one is joined in series? (a) ammeter (b) voltmeter
18. 18.📏 Which unit measures the flow of charge? (a) volt (V) (b) watt (W) (c) ampere (A) (d) ohm (Ω)
19. 19.📏 Which unit measures power? (a) volt (V) (b) watt (W) (c) ohm (Ω) (d) ampere (A)
20. 20.📏 How many ohms (Ω) is 0.4 kΩ?
21. 21.📏 How many watts (W) is 1.8 kW?
22. 22.📏 In the water-pipe picture of a circuit, voltage is like … (a) the water tank lid (b) the water pressure (c) the pipe colour (d) the tap handle
23. 23.Which of these is measured in watts (W)? (a) energy used each second (b) voltage (c) the flow of charge (d) resistance
24. 24.True or false: how much a part resists is measured in ohms (Ω). (a) False (b) True
25. 25.Which of these is measured in ohms (Ω)? (a) the push of a cell (b) the flow of charge (c) resistance (d) current
26. 26.📏 Which unit measures the push of a cell? (a) ohm (Ω) (b) ampere (A) (c) watt (W) (d) volt (V)
27. 27.📏 Which unit measures how much a part resists? (a) volt (V) (b) ampere (A) (c) ohm (Ω) (d) watt (W)
28. 28.📏 How many kilowatts (kW) is 2900 W? =
29. 29.True or false: the ammeter is joined across a part. (a) True (b) False
30. 30.📏 How many amperes (A) is 2980 mA? =
31. 31.Which of these is measured in watts (W)? (a) the flow of charge (b) power (c) the push of a cell (d) voltage
32. 32.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 100 (b) 1000 (c) 10 (d) 1024
33. 33.📏 How many kilowatts (kW) is 3000 W? =
34. 34.📏 How many kilo-ohms (kΩ) is 7400 Ω? =
35. 35.True or false: the voltmeter measures voltage. (a) False (b) True
36. 36.True or false: resistance is measured in volts (V). (a) True (b) False
37. 37.True or false: energy used each second is measured in amperes (A). (a) True (b) False
38. 38.📏 How many watts (W) is 0.4 kW?
39. 39.True or false: current is measured in amperes (A). (a) False (b) True
40. 40.True or false: the voltmeter is joined across a part. (a) False (b) True

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