Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 509 · 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 the push of a cell? (a) watt (W) (b) ohm (Ω) (c) ampere (A) (d) volt (V)
2. 2.📏 Which unit measures current? (a) ampere (A) (b) volt (V) (c) ohm (Ω) (d) watt (W)
3. 3.True or false: the voltmeter measures current. (a) False (b) True
4. 4.📏 How many amperes (A) is 50 mA? =
5. 5.True or false: resistance is measured in volts (V). (a) False (b) True
6. 6.📏 How many milliamperes (mA) is 2.28 A?
7. 7.True or false: the voltmeter is joined in series. (a) True (b) False
8. 8.📏 Voltmeter or ammeter: which one measures voltage? (a) voltmeter (b) ammeter
9. 9.Which of these is measured in amperes (A)? (a) energy used each second (b) how much a part resists (c) current (d) power
10. 10.📏 Which unit measures energy used each second? (a) ohm (Ω) (b) watt (W) (c) ampere (A) (d) volt (V)
11. 11.📏 How many amperes (A) is 1430 mA? =
12. 12.📏 Which unit measures resistance? (a) ampere (A) (b) ohm (Ω) (c) volt (V) (d) watt (W)
13. 13.True or false: resistance is measured in ohms (Ω). (a) True (b) False
14. 14.True or false: the ammeter is joined in series. (a) False (b) True
15. 15.📏 How many milliamperes (mA) is 1.17 A?
16. 16.📏 Which unit measures how much a part resists? (a) ampere (A) (b) ohm (Ω) (c) watt (W) (d) volt (V)
17. 17.Which of these is measured in volts (V)? (a) current (b) energy used each second (c) voltage (d) resistance
18. 18.True or false: the ammeter measures voltage. (a) False (b) True
19. 19.True or false: the voltmeter is joined across a part. (a) False (b) True
20. 20.📏 Voltmeter or ammeter: which one is joined across a part? (a) voltmeter (b) ammeter
21. 21.Which of these is measured in ohms (Ω)? (a) voltage (b) current (c) resistance (d) the flow of charge
22. 22.📏 Voltmeter or ammeter: which one measures current? (a) voltmeter (b) ammeter
23. 23.📏 In the water-pipe picture of a circuit, voltage is like … (a) the water pressure (b) the pipe colour (c) the water tank lid (d) the tap handle
24. 24.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 100 (b) 1000 (c) 1024 (d) 10
25. 25.📏 How many kilo-ohms (kΩ) is 7100 Ω? =
26. 26.True or false: the voltmeter measures voltage. (a) False (b) True
27. 27.Which of these is measured in watts (W)? (a) energy used each second (b) voltage (c) current (d) the push of a cell
28. 28.Which of these is measured in volts (V)? (a) the push of a cell (b) how much a part resists (c) resistance (d) the flow of charge
29. 29.📏 In the water-pipe picture of a circuit, current is like … (a) the water pressure (b) the flow of water (c) the pipe colour (d) a narrow pipe
30. 30.📏 How many milliamperes (mA) make 1 ampere? (a) 100 (b) 1000 (c) 10 (d) 60
31. 31.📏 How many kilo-ohms (kΩ) is 3800 Ω? =
32. 32.📏 How many ohms (Ω) is 1.3 kΩ?
33. 33.True or false: the ammeter measures current. (a) False (b) True
34. 34.📏 How many milliamperes (mA) is 0.71 A?
35. 35.Which of these is measured in watts (W)? (a) resistance (b) voltage (c) the push of a cell (d) power
36. 36.📏 Which unit measures voltage? (a) watt (W) (b) ohm (Ω) (c) volt (V) (d) ampere (A)
37. 37.📏 How many watts (W) is 1.6 kW?
38. 38.📏 How many ohms (Ω) is 1.2 kΩ?
39. 39.📏 How many kilowatts (kW) is 4250 W? =
40. 40.📏 Voltmeter or ammeter: which one is joined in series? (a) voltmeter (b) ammeter

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