Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 12 · 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: the flow of charge is measured in volts (V). (a) True (b) False
2. 2.📏 Which unit measures voltage? (a) watt (W) (b) volt (V) (c) ampere (A) (d) ohm (Ω)
3. 3.Which of these is measured in amperes (A)? (a) resistance (b) the push of a cell (c) power (d) current
4. 4.📏 Voltmeter or ammeter: which one measures voltage? (a) voltmeter (b) ammeter
5. 5.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 1000 (b) 10 (c) 100 (d) 1024
6. 6.📏 Voltmeter or ammeter: which one is joined in series? (a) voltmeter (b) ammeter
7. 7.📏 How many ohms (Ω) is 0.7 kΩ?
8. 8.True or false: voltage is measured in amperes (A). (a) False (b) True
9. 9.True or false: the voltmeter is joined across a part. (a) False (b) True
10. 10.📏 Which unit measures how much a part resists? (a) watt (W) (b) ohm (Ω) (c) ampere (A) (d) volt (V)
11. 11.True or false: power is measured in watts (W). (a) True (b) False
12. 12.📏 In the water-pipe picture of a circuit, voltage is like … (a) the water tank lid (b) the tap handle (c) the pipe colour (d) the water pressure
13. 13.📏 How many milliamperes (mA) is 0.03 A?
14. 14.True or false: the ammeter measures voltage. (a) False (b) True
15. 15.📏 How many kilo-ohms (kΩ) is 4000 Ω? =
16. 16.📏 How many amperes (A) is 1840 mA? =
17. 17.📏 How many kilo-ohms (kΩ) is 2300 Ω? =
18. 18.📏 Voltmeter or ammeter: which one is joined across a part? (a) voltmeter (b) ammeter
19. 19.Which of these is measured in watts (W)? (a) current (b) voltage (c) energy used each second (d) the push of a cell
20. 20.Which of these is measured in amperes (A)? (a) how much a part resists (b) the push of a cell (c) resistance (d) the flow of charge
21. 21.📏 Which unit measures the flow of charge? (a) watt (W) (b) ohm (Ω) (c) ampere (A) (d) volt (V)
22. 22.True or false: the ammeter is joined in series. (a) True (b) False
23. 23.📏 Which unit measures energy used each second? (a) ampere (A) (b) volt (V) (c) ohm (Ω) (d) watt (W)
24. 24.📏 How many ohms (Ω) is 2.6 kΩ?
25. 25.📏 How many milliamperes (mA) is 0.2 A?
26. 26.True or false: energy used each second is measured in volts (V). (a) False (b) True
27. 27.Which of these is measured in volts (V)? (a) energy used each second (b) resistance (c) the push of a cell (d) how much a part resists
28. 28.True or false: energy used each second is measured in watts (W). (a) False (b) True
29. 29.True or false: the voltmeter measures voltage. (a) True (b) False
30. 30.📏 How many amperes (A) is 1750 mA? =
31. 31.📏 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
32. 32.📏 Voltmeter or ammeter: which one measures current? (a) voltmeter (b) ammeter
33. 33.📏 How many milliamperes (mA) make 1 ampere? (a) 1000 (b) 100 (c) 10 (d) 60
34. 34.📏 How many kilo-ohms (kΩ) is 1900 Ω? =
35. 35.📏 Which unit measures the push of a cell? (a) volt (V) (b) ampere (A) (c) ohm (Ω) (d) watt (W)
36. 36.📏 How many watts (W) is 4.5 kW?
37. 37.📏 How many milliamperes (mA) is 2.04 A?
38. 38.📏 How many ohms (Ω) is 1.5 kΩ?
39. 39.📏 How many kilowatts (kW) is 3200 W? =
40. 40.True or false: resistance is measured in ohms (Ω). (a) False (b) True

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