Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 405 · 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: current is measured in amperes (A). (a) True (b) False
2. 2.Which of these is measured in ohms (Ω)? (a) the flow of charge (b) current (c) how much a part resists (d) power
3. 3.📏 How many milliamperes (mA) is 2.08 A?
4. 4.Which of these is measured in volts (V)? (a) energy used each second (b) the push of a cell (c) current (d) how much a part resists
5. 5.Which of these is measured in watts (W)? (a) the flow of charge (b) current (c) voltage (d) energy used each second
6. 6.📏 Voltmeter or ammeter: which one measures voltage? (a) ammeter (b) voltmeter
7. 7.📏 Which unit measures the push of a cell? (a) ampere (A) (b) volt (V) (c) watt (W) (d) ohm (Ω)
8. 8.📏 How many milliamperes (mA) make 1 ampere? (a) 100 (b) 60 (c) 10 (d) 1000
9. 9.📏 Voltmeter or ammeter: which one is joined in series? (a) voltmeter (b) ammeter
10. 10.📏 In the water-pipe picture of a circuit, current is like … (a) the pipe colour (b) a narrow pipe (c) the water pressure (d) the flow of water
11. 11.True or false: the ammeter is joined in series. (a) False (b) True
12. 12.📏 How many kilo-ohms (kΩ) is 4800 Ω? =
13. 13.📏 In the water-pipe picture of a circuit, voltage is like … (a) the water pressure (b) the tap handle (c) the pipe colour (d) the water tank lid
14. 14.True or false: the voltmeter measures voltage. (a) True (b) False
15. 15.📏 Which unit measures energy used each second? (a) watt (W) (b) volt (V) (c) ampere (A) (d) ohm (Ω)
16. 16.True or false: the push of a cell is measured in amperes (A). (a) True (b) False
17. 17.True or false: the flow of charge is measured in amperes (A). (a) True (b) False
18. 18.Which of these is measured in amperes (A)? (a) power (b) voltage (c) resistance (d) the flow of charge
19. 19.Which of these is measured in volts (V)? (a) energy used each second (b) voltage (c) the flow of charge (d) current
20. 20.True or false: power is measured in watts (W). (a) False (b) True
21. 21.📏 Which unit measures current? (a) ohm (Ω) (b) watt (W) (c) ampere (A) (d) volt (V)
22. 22.📏 Which unit measures how much a part resists? (a) watt (W) (b) ampere (A) (c) volt (V) (d) ohm (Ω)
23. 23.📏 Voltmeter or ammeter: which one is joined across a part? (a) voltmeter (b) ammeter
24. 24.📏 How many ohms (Ω) is 2.7 kΩ?
25. 25.True or false: the voltmeter is joined across a part. (a) True (b) False
26. 26.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 1024 (b) 100 (c) 1000 (d) 10
27. 27.📏 How many watts (W) is 5 kW?
28. 28.📏 Which unit measures the flow of charge? (a) ohm (Ω) (b) ampere (A) (c) volt (V) (d) watt (W)
29. 29.True or false: the push of a cell is measured in volts (V). (a) True (b) False
30. 30.📏 Voltmeter or ammeter: which one measures current? (a) ammeter (b) voltmeter
31. 31.True or false: voltage is measured in volts (V). (a) True (b) False
32. 32.📏 How many kilo-ohms (kΩ) is 9800 Ω? =
33. 33.True or false: the ammeter is joined across a part. (a) False (b) True
34. 34.📏 Which unit measures voltage? (a) ampere (A) (b) ohm (Ω) (c) watt (W) (d) volt (V)
35. 35.True or false: energy used each second is measured in amperes (A). (a) True (b) False
36. 36.True or false: the flow of charge is measured in watts (W). (a) True (b) False
37. 37.Which of these is measured in ohms (Ω)? (a) resistance (b) power (c) current (d) the flow of charge
38. 38.📏 How many ohms (Ω) is 0.8 kΩ?
39. 39.📏 How many amperes (A) is 220 mA? =
40. 40.📏 How many amperes (A) is 2560 mA? =

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