Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 140 · 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.📏 Voltmeter or ammeter: which one is joined across a part? (a) ammeter (b) voltmeter
2. 2.📏 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
3. 3.True or false: power is measured in ohms (Ω). (a) True (b) False
4. 4.True or false: the ammeter is joined across a part. (a) True (b) False
5. 5.Which of these is measured in volts (V)? (a) voltage (b) the flow of charge (c) resistance (d) power
6. 6.📏 Which unit measures energy used each second? (a) ohm (Ω) (b) volt (V) (c) watt (W) (d) ampere (A)
7. 7.📏 Voltmeter or ammeter: which one measures current? (a) voltmeter (b) ammeter
8. 8.Which of these is measured in ohms (Ω)? (a) resistance (b) voltage (c) power (d) the push of a cell
9. 9.📏 How many milliamperes (mA) is 1.47 A?
10. 10.📏 Which unit measures voltage? (a) watt (W) (b) ampere (A) (c) volt (V) (d) ohm (Ω)
11. 11.True or false: power is measured in volts (V). (a) True (b) False
12. 12.True or false: energy used each second is measured in volts (V). (a) False (b) True
13. 13.Which of these is measured in amperes (A)? (a) how much a part resists (b) energy used each second (c) voltage (d) the flow of charge
14. 14.📏 How many amperes (A) is 2250 mA? =
15. 15.True or false: the ammeter measures voltage. (a) False (b) True
16. 16.Which of these is measured in watts (W)? (a) power (b) the push of a cell (c) voltage (d) resistance
17. 17.📏 How many ohms (Ω) is 6.9 kΩ?
18. 18.📏 How many watts (W) is 4.5 kW?
19. 19.📏 How many milliamperes (mA) is 1.62 A?
20. 20.📏 How many ohms (Ω) is 1.7 kΩ?
21. 21.True or false: the push of a cell is measured in volts (V). (a) False (b) True
22. 22.📏 How many milliamperes (mA) is 1.26 A?
23. 23.📏 How many amperes (A) is 2840 mA? =
24. 24.Which of these is measured in ohms (Ω)? (a) voltage (b) how much a part resists (c) the push of a cell (d) current
25. 25.📏 How many ohms (Ω) is 9.5 kΩ?
26. 26.True or false: voltage is measured in watts (W). (a) True (b) False
27. 27.📏 How many milliamperes (mA) is 1.36 A?
28. 28.📏 How many milliamperes (mA) is 2.29 A?
29. 29.📏 How many kilo-ohms (kΩ) is 3100 Ω? =
30. 30.📏 Which unit measures resistance? (a) watt (W) (b) volt (V) (c) ampere (A) (d) ohm (Ω)
31. 31.Which of these is measured in amperes (A)? (a) current (b) how much a part resists (c) voltage (d) resistance
32. 32.📏 Which unit measures the flow of charge? (a) volt (V) (b) ohm (Ω) (c) watt (W) (d) ampere (A)
33. 33.📏 How many milliamperes (mA) is 0.48 A?
34. 34.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 10 (b) 1024 (c) 100 (d) 1000
35. 35.True or false: the flow of charge is measured in amperes (A). (a) False (b) True
36. 36.Which of these is measured in watts (W)? (a) resistance (b) energy used each second (c) the flow of charge (d) the push of a cell
37. 37.📏 Voltmeter or ammeter: which one is joined in series? (a) ammeter (b) voltmeter
38. 38.📏 In the water-pipe picture of a circuit, resistance is like … (a) a bigger tank (b) the flow of water (c) a narrow pipe (d) the water pressure
39. 39.True or false: the ammeter is joined in series. (a) True (b) False
40. 40.📏 How many amperes (A) is 330 mA? =

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