Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 553 · 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 the push of a cell? (a) watt (W) (b) volt (V) (c) ampere (A) (d) ohm (Ω)
2. 2.📏 Which unit measures energy used each second? (a) ohm (Ω) (b) volt (V) (c) watt (W) (d) ampere (A)
3. 3.True or false: the ammeter measures current. (a) True (b) False
4. 4.Which of these is measured in amperes (A)? (a) energy used each second (b) how much a part resists (c) voltage (d) the flow of charge
5. 5.True or false: the voltmeter is joined across a part. (a) True (b) False
6. 6.True or false: the voltmeter measures voltage. (a) True (b) False
7. 7.📏 How many ohms (Ω) is 5.6 kΩ?
8. 8.True or false: resistance is measured in volts (V). (a) True (b) False
9. 9.Which of these is measured in volts (V)? (a) the flow of charge (b) voltage (c) how much a part resists (d) current
10. 10.📏 How many milliamperes (mA) is 1.7 A?
11. 11.True or false: the ammeter measures voltage. (a) True (b) False
12. 12.True or false: resistance is measured in ohms (Ω). (a) True (b) False
13. 13.Which of these is measured in ohms (Ω)? (a) voltage (b) resistance (c) current (d) power
14. 14.Which of these is measured in ohms (Ω)? (a) current (b) the push of a cell (c) how much a part resists (d) energy used each second
15. 15.📏 How many watts (W) is 0.4 kW?
16. 16.📏 Which unit measures voltage? (a) watt (W) (b) ampere (A) (c) ohm (Ω) (d) volt (V)
17. 17.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 1000 (b) 1024 (c) 10 (d) 100
18. 18.True or false: current is measured in amperes (A). (a) False (b) True
19. 19.True or false: the voltmeter measures current. (a) False (b) True
20. 20.Which of these is measured in watts (W)? (a) how much a part resists (b) resistance (c) power (d) current
21. 21.True or false: voltage is measured in volts (V). (a) False (b) True
22. 22.📏 In the water-pipe picture of a circuit, voltage is like … (a) the pipe colour (b) the water tank lid (c) the water pressure (d) the tap handle
23. 23.📏 How many ohms (Ω) is 7.9 kΩ?
24. 24.📏 Which unit measures power? (a) ampere (A) (b) watt (W) (c) volt (V) (d) ohm (Ω)
25. 25.True or false: power is measured in volts (V). (a) True (b) False
26. 26.Which of these is measured in amperes (A)? (a) power (b) energy used each second (c) current (d) the push of a cell
27. 27.📏 Which unit measures resistance? (a) watt (W) (b) ampere (A) (c) volt (V) (d) ohm (Ω)
28. 28.True or false: power is measured in amperes (A). (a) True (b) False
29. 29.True or false: energy used each second is measured in watts (W). (a) True (b) False
30. 30.📏 In the water-pipe picture of a circuit, current is like … (a) the flow of water (b) the pipe colour (c) a narrow pipe (d) the water pressure
31. 31.📏 How many amperes (A) is 2110 mA? =
32. 32.📏 How many milliamperes (mA) is 1.64 A?
33. 33.📏 How many watts (W) is 2.3 kW?
34. 34.📏 How many watts (W) is 0.3 kW?
35. 35.Which of these is measured in watts (W)? (a) the flow of charge (b) how much a part resists (c) energy used each second (d) current
36. 36.📏 Voltmeter or ammeter: which one is joined across a part? (a) voltmeter (b) ammeter
37. 37.📏 How many milliamperes (mA) is 1.26 A?
38. 38.📏 How many watts (W) is 1.8 kW?
39. 39.📏 How many kilowatts (kW) is 1650 W? =
40. 40.📏 Voltmeter or ammeter: which one measures current? (a) ammeter (b) voltmeter

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