Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 666 · 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 is joined across a part? (a) ammeter (b) voltmeter
2. 2.Which of these is measured in volts (V)? (a) energy used each second (b) voltage (c) how much a part resists (d) resistance
3. 3.📏 How many kilo-ohms (kΩ) is 7200 Ω? =
4. 4.📏 Which unit measures how much a part resists? (a) watt (W) (b) volt (V) (c) ampere (A) (d) ohm (Ω)
5. 5.True or false: the ammeter measures current. (a) True (b) False
6. 6.📏 Which unit measures voltage? (a) ampere (A) (b) watt (W) (c) ohm (Ω) (d) volt (V)
7. 7.📏 Which unit measures energy used each second? (a) volt (V) (b) ampere (A) (c) watt (W) (d) ohm (Ω)
8. 8.📏 How many milliamperes (mA) is 2.68 A?
9. 9.📏 How many kilowatts (kW) is 3600 W? =
10. 10.Which of these is measured in volts (V)? (a) the push of a cell (b) current (c) resistance (d) power
11. 11.📏 How many watts (W) is 3.6 kW?
12. 12.📏 Voltmeter or ammeter: which one is joined in series? (a) voltmeter (b) ammeter
13. 13.📏 Which unit measures power? (a) ampere (A) (b) volt (V) (c) ohm (Ω) (d) watt (W)
14. 14.True or false: the voltmeter measures current. (a) True (b) False
15. 15.📏 How many amperes (A) is 310 mA? =
16. 16.📏 Which unit measures resistance? (a) volt (V) (b) ohm (Ω) (c) watt (W) (d) ampere (A)
17. 17.📏 How many watts (W) is 2.5 kW?
18. 18.True or false: the voltmeter measures voltage. (a) True (b) False
19. 19.True or false: voltage is measured in amperes (A). (a) True (b) False
20. 20.📏 How many kilo-ohms (kΩ) is 4600 Ω? =
21. 21.True or false: power is measured in watts (W). (a) True (b) False
22. 22.📏 Which unit measures current? (a) ohm (Ω) (b) ampere (A) (c) watt (W) (d) volt (V)
23. 23.Which of these is measured in watts (W)? (a) the push of a cell (b) voltage (c) power (d) resistance
24. 24.📏 How many kilowatts (kW) is 2950 W? =
25. 25.True or false: the ammeter measures voltage. (a) False (b) True
26. 26.True or false: voltage is measured in volts (V). (a) False (b) True
27. 27.True or false: the flow of charge is measured in volts (V). (a) False (b) True
28. 28.📏 Voltmeter or ammeter: which one measures voltage? (a) ammeter (b) voltmeter
29. 29.True or false: the flow of charge is measured in amperes (A). (a) False (b) True
30. 30.📏 How many milliamperes (mA) make 1 ampere? (a) 60 (b) 100 (c) 1000 (d) 10
31. 31.True or false: the ammeter is joined in series. (a) False (b) True
32. 32.📏 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
33. 33.📏 How many milliamperes (mA) is 1.07 A?
34. 34.📏 How many ohms (Ω) is 6.8 kΩ?
35. 35.📏 How many watts (W) is 4.4 kW?
36. 36.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 1024 (b) 100 (c) 10 (d) 1000
37. 37.📏 How many ohms (Ω) is 3.2 kΩ?
38. 38.True or false: the voltmeter is joined in series. (a) False (b) True
39. 39.True or false: how much a part resists is measured in ohms (Ω). (a) True (b) False
40. 40.📏 In the water-pipe picture of a circuit, current is like … (a) the pipe colour (b) the water pressure (c) the flow of water (d) a narrow pipe

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