Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 921 · 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: energy used each second is measured in volts (V). (a) False (b) True
2. 2.📏 How many kilowatts (kW) is 4400 W? =
3. 3.📏 How many milliamperes (mA) is 0.22 A?
4. 4.📏 Which unit measures the push of a cell? (a) ohm (Ω) (b) watt (W) (c) volt (V) (d) ampere (A)
5. 5.📏 Voltmeter or ammeter: which one measures voltage? (a) voltmeter (b) ammeter
6. 6.True or false: the ammeter measures current. (a) True (b) False
7. 7.📏 Which unit measures power? (a) volt (V) (b) watt (W) (c) ampere (A) (d) ohm (Ω)
8. 8.True or false: how much a part resists is measured in watts (W). (a) True (b) False
9. 9.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 10 (b) 1024 (c) 1000 (d) 100
10. 10.📏 How many watts (W) is 4.9 kW?
11. 11.Which of these is measured in amperes (A)? (a) resistance (b) energy used each second (c) current (d) power
12. 12.📏 How many kilowatts (kW) is 850 W? =
13. 13.True or false: the voltmeter measures voltage. (a) True (b) False
14. 14.📏 Voltmeter or ammeter: which one is joined in series? (a) voltmeter (b) ammeter
15. 15.Which of these is measured in volts (V)? (a) resistance (b) the push of a cell (c) energy used each second (d) current
16. 16.📏 Which unit measures voltage? (a) ampere (A) (b) ohm (Ω) (c) volt (V) (d) watt (W)
17. 17.📏 In the water-pipe picture of a circuit, resistance is like … (a) the flow of water (b) a narrow pipe (c) the water pressure (d) a bigger tank
18. 18.📏 How many amperes (A) is 90 mA? =
19. 19.📏 Voltmeter or ammeter: which one measures current? (a) voltmeter (b) ammeter
20. 20.📏 How many ohms (Ω) is 6.8 kΩ?
21. 21.📏 Which unit measures the flow of charge? (a) ohm (Ω) (b) watt (W) (c) ampere (A) (d) volt (V)
22. 22.True or false: current is measured in volts (V). (a) True (b) False
23. 23.📏 How many amperes (A) is 2940 mA? =
24. 24.📏 How many kilo-ohms (kΩ) is 8500 Ω? =
25. 25.True or false: voltage is measured in watts (W). (a) False (b) True
26. 26.True or false: the ammeter measures voltage. (a) True (b) False
27. 27.📏 Which unit measures current? (a) watt (W) (b) ampere (A) (c) ohm (Ω) (d) volt (V)
28. 28.True or false: the ammeter is joined in series. (a) False (b) True
29. 29.📏 How many amperes (A) is 1530 mA? =
30. 30.📏 How many ohms (Ω) is 9.6 kΩ?
31. 31.True or false: power is measured in watts (W). (a) False (b) True
32. 32.True or false: the push of a cell is measured in ohms (Ω). (a) True (b) False
33. 33.True or false: voltage is measured in volts (V). (a) True (b) False
34. 34.Which of these is measured in watts (W)? (a) resistance (b) how much a part resists (c) current (d) power
35. 35.📏 How many milliamperes (mA) make 1 ampere? (a) 100 (b) 10 (c) 60 (d) 1000
36. 36.📏 How many watts (W) is 1.2 kW?
37. 37.📏 How many kilo-ohms (kΩ) is 5700 Ω? =
38. 38.📏 Which unit measures how much a part resists? (a) ohm (Ω) (b) ampere (A) (c) watt (W) (d) volt (V)
39. 39.📏 How many amperes (A) is 560 mA? =
40. 40.Which of these is measured in watts (W)? (a) energy used each second (b) voltage (c) resistance (d) current

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