Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 959 · 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.📏 How many milliamperes (mA) is 0.85 A?
2. 2.📏 In the water-pipe picture of a circuit, resistance is like … (a) a narrow pipe (b) a bigger tank (c) the water pressure (d) the flow of water
3. 3.Which of these is measured in volts (V)? (a) current (b) how much a part resists (c) resistance (d) the push of a cell
4. 4.True or false: resistance is measured in ohms (Ω). (a) True (b) False
5. 5.True or false: current is measured in volts (V). (a) True (b) False
6. 6.📏 How many kilo-ohms (kΩ) is 3200 Ω? =
7. 7.📏 Voltmeter or ammeter: which one measures current? (a) ammeter (b) voltmeter
8. 8.True or false: resistance is measured in amperes (A). (a) False (b) True
9. 9.True or false: voltage is measured in ohms (Ω). (a) True (b) False
10. 10.📏 Which unit measures current? (a) ohm (Ω) (b) volt (V) (c) watt (W) (d) ampere (A)
11. 11.📏 Voltmeter or ammeter: which one is joined in series? (a) voltmeter (b) ammeter
12. 12.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 100 (b) 1000 (c) 10 (d) 1024
13. 13.📏 Which unit measures voltage? (a) ohm (Ω) (b) watt (W) (c) volt (V) (d) ampere (A)
14. 14.Which of these is measured in volts (V)? (a) current (b) voltage (c) the flow of charge (d) resistance
15. 15.📏 Voltmeter or ammeter: which one is joined across a part? (a) voltmeter (b) ammeter
16. 16.📏 How many kilo-ohms (kΩ) is 9400 Ω? =
17. 17.📏 In the water-pipe picture of a circuit, current is like … (a) the flow of water (b) the water pressure (c) the pipe colour (d) a narrow pipe
18. 18.📏 Which unit measures the flow of charge? (a) watt (W) (b) ohm (Ω) (c) ampere (A) (d) volt (V)
19. 19.True or false: the ammeter measures voltage. (a) True (b) False
20. 20.True or false: voltage is measured in volts (V). (a) True (b) False
21. 21.📏 Which unit measures the push of a cell? (a) ohm (Ω) (b) watt (W) (c) volt (V) (d) ampere (A)
22. 22.📏 Which unit measures energy used each second? (a) ohm (Ω) (b) volt (V) (c) ampere (A) (d) watt (W)
23. 23.📏 How many watts (W) is 2.6 kW?
24. 24.True or false: voltage is measured in amperes (A). (a) False (b) True
25. 25.📏 How many watts (W) is 2.1 kW?
26. 26.📏 How many milliamperes (mA) make 1 ampere? (a) 10 (b) 1000 (c) 60 (d) 100
27. 27.True or false: the voltmeter measures voltage. (a) True (b) False
28. 28.Which of these is measured in watts (W)? (a) the flow of charge (b) the push of a cell (c) current (d) power
29. 29.Which of these is measured in watts (W)? (a) voltage (b) the flow of charge (c) energy used each second (d) the push of a cell
30. 30.Which of these is measured in ohms (Ω)? (a) current (b) how much a part resists (c) the push of a cell (d) energy used each second
31. 31.📏 How many kilo-ohms (kΩ) is 4200 Ω? =
32. 32.True or false: energy used each second is measured in watts (W). (a) True (b) False
33. 33.📏 How many watts (W) is 2 kW?
34. 34.📏 How many watts (W) is 3.9 kW?
35. 35.📏 Voltmeter or ammeter: which one measures voltage? (a) voltmeter (b) ammeter
36. 36.True or false: the ammeter measures current. (a) False (b) True
37. 37.True or false: the voltmeter is joined across a part. (a) True (b) False
38. 38.📏 How many ohms (Ω) is 5.1 kΩ?
39. 39.📏 How many amperes (A) is 2110 mA? =
40. 40.📏 How many watts (W) is 3.5 kW?

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