Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 722 · 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 of these is measured in watts (W)? (a) voltage (b) power (c) current (d) resistance
2. 2.True or false: the flow of charge is measured in volts (V). (a) False (b) True
3. 3.📏 Which unit measures power? (a) volt (V) (b) ohm (Ω) (c) watt (W) (d) ampere (A)
4. 4.📏 Voltmeter or ammeter: which one measures current? (a) ammeter (b) voltmeter
5. 5.📏 How many milliamperes (mA) is 1.73 A?
6. 6.True or false: the ammeter measures current. (a) False (b) True
7. 7.📏 Voltmeter or ammeter: which one measures voltage? (a) voltmeter (b) ammeter
8. 8.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 100 (b) 10 (c) 1024 (d) 1000
9. 9.📏 How many milliamperes (mA) is 0.58 A?
10. 10.True or false: how much a part resists is measured in ohms (Ω). (a) True (b) False
11. 11.📏 Voltmeter or ammeter: which one is joined across a part? (a) voltmeter (b) ammeter
12. 12.Which of these is measured in watts (W)? (a) the flow of charge (b) resistance (c) the push of a cell (d) energy used each second
13. 13.📏 How many ohms (Ω) is 7.9 kΩ?
14. 14.📏 How many watts (W) is 4.3 kW?
15. 15.📏 Which unit measures the flow of charge? (a) watt (W) (b) ampere (A) (c) ohm (Ω) (d) volt (V)
16. 16.📏 In the water-pipe picture of a circuit, current is like … (a) the water pressure (b) the flow of water (c) a narrow pipe (d) the pipe colour
17. 17.📏 How many milliamperes (mA) make 1 ampere? (a) 1000 (b) 10 (c) 100 (d) 60
18. 18.📏 In the water-pipe picture of a circuit, voltage is like … (a) the water tank lid (b) the tap handle (c) the water pressure (d) the pipe colour
19. 19.📏 Which unit measures resistance? (a) ampere (A) (b) volt (V) (c) watt (W) (d) ohm (Ω)
20. 20.📏 How many amperes (A) is 310 mA? =
21. 21.Which of these is measured in volts (V)? (a) current (b) voltage (c) power (d) how much a part resists
22. 22.📏 How many watts (W) is 4.2 kW?
23. 23.True or false: the voltmeter measures voltage. (a) False (b) True
24. 24.📏 Which unit measures the push of a cell? (a) volt (V) (b) ampere (A) (c) watt (W) (d) ohm (Ω)
25. 25.📏 How many kilo-ohms (kΩ) is 7600 Ω? =
26. 26.Which of these is measured in amperes (A)? (a) how much a part resists (b) current (c) voltage (d) the push of a cell
27. 27.True or false: the voltmeter measures current. (a) True (b) False
28. 28.📏 How many watts (W) is 3.1 kW?
29. 29.True or false: power is measured in ohms (Ω). (a) True (b) False
30. 30.True or false: the push of a cell is measured in watts (W). (a) True (b) False
31. 31.📏 Which unit measures how much a part resists? (a) volt (V) (b) ohm (Ω) (c) ampere (A) (d) watt (W)
32. 32.True or false: resistance is measured in ohms (Ω). (a) True (b) False
33. 33.📏 How many milliamperes (mA) is 1.21 A?
34. 34.📏 How many watts (W) is 3.8 kW?
35. 35.📏 Voltmeter or ammeter: which one is joined in series? (a) voltmeter (b) ammeter
36. 36.Which of these is measured in amperes (A)? (a) the flow of charge (b) the push of a cell (c) how much a part resists (d) energy used each second
37. 37.📏 How many amperes (A) is 1410 mA? =
38. 38.True or false: the ammeter measures voltage. (a) True (b) False
39. 39.True or false: the ammeter is joined in series. (a) False (b) True
40. 40.📏 How many amperes (A) is 2050 mA? =

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