Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 640 · 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 push of a cell is measured in volts (V). (a) False (b) True
2. 2.True or false: the ammeter measures voltage. (a) True (b) False
3. 3.True or false: the push of a cell is measured in watts (W). (a) False (b) True
4. 4.Which of these is measured in volts (V)? (a) the flow of charge (b) energy used each second (c) current (d) voltage
5. 5.True or false: power is measured in volts (V). (a) True (b) False
6. 6.True or false: the voltmeter measures voltage. (a) True (b) False
7. 7.📏 Voltmeter or ammeter: which one is joined across a part? (a) ammeter (b) voltmeter
8. 8.Which of these is measured in amperes (A)? (a) voltage (b) power (c) current (d) resistance
9. 9.📏 Voltmeter or ammeter: which one measures voltage? (a) voltmeter (b) ammeter
10. 10.📏 How many ohms (Ω) is 0.9 kΩ?
11. 11.📏 Which unit measures power? (a) ampere (A) (b) watt (W) (c) ohm (Ω) (d) volt (V)
12. 12.Which of these is measured in watts (W)? (a) current (b) the flow of charge (c) power (d) the push of a cell
13. 13.📏 How many amperes (A) is 2410 mA? =
14. 14.Which of these is measured in ohms (Ω)? (a) how much a part resists (b) power (c) the push of a cell (d) energy used each second
15. 15.Which of these is measured in volts (V)? (a) energy used each second (b) current (c) the push of a cell (d) power
16. 16.True or false: current is measured in amperes (A). (a) False (b) True
17. 17.True or false: the voltmeter is joined in series. (a) False (b) True
18. 18.📏 Which unit measures how much a part resists? (a) watt (W) (b) ampere (A) (c) ohm (Ω) (d) volt (V)
19. 19.📏 Voltmeter or ammeter: which one is joined in series? (a) ammeter (b) voltmeter
20. 20.📏 How many milliamperes (mA) is 1.93 A?
21. 21.True or false: the flow of charge is measured in amperes (A). (a) True (b) False
22. 22.📏 Which unit measures current? (a) watt (W) (b) ohm (Ω) (c) volt (V) (d) ampere (A)
23. 23.True or false: how much a part resists is measured in amperes (A). (a) False (b) True
24. 24.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 1024 (b) 100 (c) 1000 (d) 10
25. 25.📏 How many milliamperes (mA) is 0.54 A?
26. 26.📏 In the water-pipe picture of a circuit, current is like … (a) the flow of water (b) the water pressure (c) a narrow pipe (d) the pipe colour
27. 27.True or false: the ammeter measures current. (a) False (b) True
28. 28.📏 How many ohms (Ω) is 7.7 kΩ?
29. 29.📏 How many watts (W) is 1.8 kW?
30. 30.📏 How many amperes (A) is 1590 mA? =
31. 31.True or false: the ammeter is joined in series. (a) True (b) False
32. 32.📏 How many watts (W) is 3.4 kW?
33. 33.True or false: the voltmeter is joined across a part. (a) True (b) False
34. 34.Which of these is measured in watts (W)? (a) current (b) the flow of charge (c) energy used each second (d) the push of a cell
35. 35.📏 How many milliamperes (mA) make 1 ampere? (a) 10 (b) 60 (c) 100 (d) 1000
36. 36.📏 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
37. 37.Which of these is measured in ohms (Ω)? (a) the push of a cell (b) resistance (c) current (d) energy used each second
38. 38.📏 Which unit measures the flow of charge? (a) watt (W) (b) ampere (A) (c) ohm (Ω) (d) volt (V)
39. 39.True or false: the flow of charge is measured in watts (W). (a) True (b) False
40. 40.True or false: voltage is measured in volts (V). (a) False (b) True

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