Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 389 · 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: power is measured in ohms (Ω). (a) True (b) False
2. 2.True or false: how much a part resists is measured in amperes (A). (a) False (b) True
3. 3.📏 How many milliamperes (mA) is 2.15 A?
4. 4.📏 Which unit measures resistance? (a) volt (V) (b) watt (W) (c) ohm (Ω) (d) ampere (A)
5. 5.Which of these is measured in volts (V)? (a) the push of a cell (b) resistance (c) current (d) the flow of charge
6. 6.📏 Which unit measures how much a part resists? (a) ohm (Ω) (b) watt (W) (c) ampere (A) (d) volt (V)
7. 7.📏 How many milliamperes (mA) make 1 ampere? (a) 100 (b) 10 (c) 60 (d) 1000
8. 8.📏 How many milliamperes (mA) is 1.93 A?
9. 9.📏 Which unit measures power? (a) ampere (A) (b) ohm (Ω) (c) watt (W) (d) volt (V)
10. 10.📏 Voltmeter or ammeter: which one measures current? (a) voltmeter (b) ammeter
11. 11.True or false: resistance is measured in watts (W). (a) False (b) True
12. 12.Which of these is measured in volts (V)? (a) resistance (b) current (c) how much a part resists (d) voltage
13. 13.True or false: current is measured in amperes (A). (a) True (b) False
14. 14.True or false: voltage is measured in amperes (A). (a) False (b) True
15. 15.True or false: resistance is measured in amperes (A). (a) True (b) False
16. 16.📏 Which unit measures the push of a cell? (a) watt (W) (b) ohm (Ω) (c) ampere (A) (d) volt (V)
17. 17.📏 How many kilo-ohms (kΩ) is 7900 Ω? =
18. 18.📏 How many ohms (Ω) is 8.3 kΩ?
19. 19.Which of these is measured in amperes (A)? (a) energy used each second (b) current (c) the push of a cell (d) how much a part resists
20. 20.Which of these is measured in ohms (Ω)? (a) energy used each second (b) resistance (c) the push of a cell (d) current
21. 21.📏 Which unit measures energy used each second? (a) ohm (Ω) (b) watt (W) (c) ampere (A) (d) volt (V)
22. 22.📏 Voltmeter or ammeter: which one is joined in series? (a) voltmeter (b) ammeter
23. 23.True or false: the flow of charge is measured in ohms (Ω). (a) False (b) True
24. 24.📏 How many watts (W) is 1.2 kW?
25. 25.📏 How many kilo-ohms (kΩ) is 8800 Ω? =
26. 26.Which of these is measured in ohms (Ω)? (a) voltage (b) the push of a cell (c) current (d) how much a part resists
27. 27.📏 In the water-pipe picture of a circuit, resistance is like … (a) a narrow pipe (b) the water pressure (c) the flow of water (d) a bigger tank
28. 28.📏 Voltmeter or ammeter: which one is joined across a part? (a) ammeter (b) voltmeter
29. 29.📏 Which unit measures current? (a) ampere (A) (b) ohm (Ω) (c) volt (V) (d) watt (W)
30. 30.True or false: how much a part resists is measured in ohms (Ω). (a) True (b) False
31. 31.📏 How many ohms (Ω) is 4.1 kΩ?
32. 32.📏 Voltmeter or ammeter: which one measures voltage? (a) ammeter (b) voltmeter
33. 33.📏 How many amperes (A) is 640 mA? =
34. 34.📏 How many kilo-ohms (kΩ) is 300 Ω? =
35. 35.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 100 (b) 1024 (c) 1000 (d) 10
36. 36.True or false: voltage is measured in volts (V). (a) False (b) True
37. 37.True or false: the voltmeter is joined across a part. (a) False (b) True
38. 38.True or false: voltage is measured in watts (W). (a) False (b) True
39. 39.📏 How many milliamperes (mA) is 1.67 A?
40. 40.📏 How many kilo-ohms (kΩ) is 4300 Ω? =

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