Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 118 · 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.📏 Voltmeter or ammeter: which one measures current? (a) voltmeter (b) ammeter
2. 2.📏 Which unit measures current? (a) ohm (Ω) (b) watt (W) (c) volt (V) (d) ampere (A)
3. 3.📏 How many milliamperes (mA) is 0.26 A?
4. 4.True or false: the voltmeter is joined in series. (a) True (b) False
5. 5.📏 How many ohms (Ω) is 2.6 kΩ?
6. 6.📏 Voltmeter or ammeter: which one is joined in series? (a) voltmeter (b) ammeter
7. 7.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 100 (b) 1000 (c) 1024 (d) 10
8. 8.📏 Voltmeter or ammeter: which one is joined across a part? (a) ammeter (b) voltmeter
9. 9.📏 Which unit measures voltage? (a) ampere (A) (b) volt (V) (c) watt (W) (d) ohm (Ω)
10. 10.📏 Voltmeter or ammeter: which one measures voltage? (a) voltmeter (b) ammeter
11. 11.True or false: power is measured in watts (W). (a) False (b) True
12. 12.Which of these is measured in ohms (Ω)? (a) energy used each second (b) voltage (c) the flow of charge (d) how much a part resists
13. 13.📏 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
14. 14.📏 How many kilo-ohms (kΩ) is 3200 Ω? =
15. 15.📏 How many ohms (Ω) is 6.4 kΩ?
16. 16.📏 How many amperes (A) is 1740 mA? =
17. 17.📏 How many milliamperes (mA) is 0.19 A?
18. 18.True or false: the flow of charge is measured in volts (V). (a) True (b) False
19. 19.📏 Which unit measures the push of a cell? (a) ampere (A) (b) ohm (Ω) (c) watt (W) (d) volt (V)
20. 20.📏 How many kilo-ohms (kΩ) is 5500 Ω? =
21. 21.📏 Which unit measures how much a part resists? (a) volt (V) (b) watt (W) (c) ampere (A) (d) ohm (Ω)
22. 22.Which of these is measured in volts (V)? (a) power (b) voltage (c) how much a part resists (d) the flow of charge
23. 23.True or false: the voltmeter measures voltage. (a) True (b) False
24. 24.📏 Which unit measures power? (a) volt (V) (b) ohm (Ω) (c) ampere (A) (d) watt (W)
25. 25.True or false: the push of a cell is measured in volts (V). (a) True (b) False
26. 26.📏 How many ohms (Ω) is 1.5 kΩ?
27. 27.True or false: the ammeter is joined across a part. (a) True (b) False
28. 28.📏 How many amperes (A) is 1060 mA? =
29. 29.True or false: energy used each second is measured in watts (W). (a) False (b) True
30. 30.True or false: how much a part resists is measured in volts (V). (a) False (b) True
31. 31.Which of these is measured in ohms (Ω)? (a) energy used each second (b) voltage (c) current (d) resistance
32. 32.📏 How many amperes (A) is 50 mA? =
33. 33.📏 Which unit measures energy used each second? (a) watt (W) (b) ampere (A) (c) volt (V) (d) ohm (Ω)
34. 34.True or false: current is measured in watts (W). (a) False (b) True
35. 35.📏 How many watts (W) is 0.3 kW?
36. 36.📏 How many milliamperes (mA) is 1.16 A?
37. 37.True or false: the ammeter measures current. (a) False (b) True
38. 38.📏 How many amperes (A) is 610 mA? =
39. 39.📏 How many amperes (A) is 800 mA? =
40. 40.📏 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

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