Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 635 · 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.📏 Which unit measures energy used each second? (a) ohm (Ω) (b) volt (V) (c) ampere (A) (d) watt (W)
2. 2.📏 Which unit measures voltage? (a) ohm (Ω) (b) ampere (A) (c) volt (V) (d) watt (W)
3. 3.📏 How many amperes (A) is 1350 mA? =
4. 4.Which of these is measured in volts (V)? (a) energy used each second (b) the push of a cell (c) resistance (d) how much a part resists
5. 5.📏 Voltmeter or ammeter: which one is joined in series? (a) voltmeter (b) ammeter
6. 6.True or false: the voltmeter measures voltage. (a) False (b) True
7. 7.📏 How many milliamperes (mA) make 1 ampere? (a) 10 (b) 100 (c) 60 (d) 1000
8. 8.📏 Voltmeter or ammeter: which one measures current? (a) voltmeter (b) ammeter
9. 9.Which of these is measured in watts (W)? (a) resistance (b) current (c) the push of a cell (d) energy used each second
10. 10.📏 How many amperes (A) is 1740 mA? =
11. 11.📏 How many ohms (Ω) is 0.1 kΩ?
12. 12.📏 Which unit measures how much a part resists? (a) ohm (Ω) (b) volt (V) (c) watt (W) (d) ampere (A)
13. 13.Which of these is measured in volts (V)? (a) power (b) voltage (c) how much a part resists (d) the flow of charge
14. 14.True or false: power is measured in ohms (Ω). (a) False (b) True
15. 15.📏 Which unit measures the flow of charge? (a) ohm (Ω) (b) ampere (A) (c) watt (W) (d) volt (V)
16. 16.📏 How many milliamperes (mA) is 2.52 A?
17. 17.📏 Which unit measures power? (a) ohm (Ω) (b) ampere (A) (c) volt (V) (d) watt (W)
18. 18.📏 In the water-pipe picture of a circuit, resistance is like … (a) a narrow pipe (b) a bigger tank (c) the flow of water (d) the water pressure
19. 19.True or false: the push of a cell is measured in volts (V). (a) False (b) True
20. 20.📏 How many milliamperes (mA) is 2.04 A?
21. 21.Which of these is measured in ohms (Ω)? (a) energy used each second (b) current (c) the flow of charge (d) how much a part resists
22. 22.📏 How many amperes (A) is 1000 mA? =
23. 23.📏 How many amperes (A) is 1460 mA? =
24. 24.True or false: the ammeter measures voltage. (a) False (b) True
25. 25.📏 How many kilo-ohms (kΩ) is 3900 Ω? =
26. 26.📏 How many kilo-ohms (kΩ) is 8300 Ω? =
27. 27.📏 In the water-pipe picture of a circuit, voltage is like … (a) the pipe colour (b) the water tank lid (c) the tap handle (d) the water pressure
28. 28.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 1000 (b) 1024 (c) 100 (d) 10
29. 29.📏 How many watts (W) is 2.4 kW?
30. 30.📏 How many ohms (Ω) is 7.8 kΩ?
31. 31.True or false: energy used each second is measured in volts (V). (a) False (b) True
32. 32.📏 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
33. 33.📏 How many amperes (A) is 1490 mA? =
34. 34.Which of these is measured in amperes (A)? (a) how much a part resists (b) voltage (c) the flow of charge (d) energy used each second
35. 35.📏 How many amperes (A) is 190 mA? =
36. 36.True or false: power is measured in volts (V). (a) True (b) False
37. 37.Which of these is measured in amperes (A)? (a) how much a part resists (b) energy used each second (c) voltage (d) current
38. 38.📏 How many kilo-ohms (kΩ) is 1500 Ω? =
39. 39.📏 Voltmeter or ammeter: which one is joined across a part? (a) ammeter (b) voltmeter
40. 40.📏 How many amperes (A) is 1190 mA? =

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