Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 879 · 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: how much a part resists is measured in ohms (Ω). (a) True (b) False
2. 2.Which of these is measured in watts (W)? (a) current (b) energy used each second (c) the push of a cell (d) resistance
3. 3.📏 Which unit measures voltage? (a) ampere (A) (b) ohm (Ω) (c) watt (W) (d) volt (V)
4. 4.📏 Which unit measures current? (a) watt (W) (b) ohm (Ω) (c) ampere (A) (d) volt (V)
5. 5.True or false: voltage is measured in volts (V). (a) False (b) True
6. 6.True or false: the voltmeter is joined in series. (a) False (b) True
7. 7.📏 Which unit measures how much a part resists? (a) volt (V) (b) ampere (A) (c) ohm (Ω) (d) watt (W)
8. 8.True or false: the push of a cell is measured in amperes (A). (a) False (b) True
9. 9.True or false: energy used each second is measured in ohms (Ω). (a) True (b) False
10. 10.📏 Which unit measures energy used each second? (a) watt (W) (b) ohm (Ω) (c) volt (V) (d) ampere (A)
11. 11.📏 How many kilowatts (kW) is 3500 W? =
12. 12.📏 Voltmeter or ammeter: which one is joined across a part? (a) voltmeter (b) ammeter
13. 13.📏 How many milliamperes (mA) is 1.94 A?
14. 14.📏 In the water-pipe picture of a circuit, voltage is like … (a) the water tank lid (b) the water pressure (c) the tap handle (d) the pipe colour
15. 15.Which of these is measured in ohms (Ω)? (a) the flow of charge (b) power (c) energy used each second (d) how much a part resists
16. 16.True or false: the ammeter measures voltage. (a) True (b) False
17. 17.📏 Voltmeter or ammeter: which one measures voltage? (a) voltmeter (b) ammeter
18. 18.True or false: the voltmeter is joined across a part. (a) True (b) False
19. 19.📏 How many watts (W) is 0.5 kW?
20. 20.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 1024 (b) 1000 (c) 100 (d) 10
21. 21.Which of these is measured in volts (V)? (a) power (b) the flow of charge (c) the push of a cell (d) resistance
22. 22.📏 Which unit measures power? (a) ohm (Ω) (b) ampere (A) (c) volt (V) (d) watt (W)
23. 23.📏 In the water-pipe picture of a circuit, resistance is like … (a) the flow of water (b) a bigger tank (c) the water pressure (d) a narrow pipe
24. 24.📏 How many amperes (A) is 1790 mA? =
25. 25.True or false: power is measured in ohms (Ω). (a) True (b) False
26. 26.📏 How many milliamperes (mA) make 1 ampere? (a) 60 (b) 10 (c) 1000 (d) 100
27. 27.📏 How many kilowatts (kW) is 1800 W? =
28. 28.📏 How many amperes (A) is 520 mA? =
29. 29.📏 Which unit measures the push of a cell? (a) ampere (A) (b) watt (W) (c) ohm (Ω) (d) volt (V)
30. 30.Which of these is measured in ohms (Ω)? (a) the push of a cell (b) voltage (c) resistance (d) power
31. 31.📏 How many ohms (Ω) is 0.6 kΩ?
32. 32.📏 How many kilo-ohms (kΩ) is 2900 Ω? =
33. 33.True or false: voltage is measured in ohms (Ω). (a) False (b) True
34. 34.📏 How many kilowatts (kW) is 650 W? =
35. 35.📏 How many milliamperes (mA) is 0.62 A?
36. 36.📏 How many amperes (A) is 2640 mA? =
37. 37.True or false: the voltmeter measures current. (a) True (b) False
38. 38.📏 How many kilowatts (kW) is 2050 W? =
39. 39.📏 How many watts (W) is 3.3 kW?
40. 40.📏 How many kilo-ohms (kΩ) is 2200 Ω? =

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