Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 357 · 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.📏 In the water-pipe picture of a circuit, current is like … (a) the pipe colour (b) the water pressure (c) the flow of water (d) a narrow pipe
2. 2.📏 Which unit measures energy used each second? (a) watt (W) (b) volt (V) (c) ampere (A) (d) ohm (Ω)
3. 3.📏 How many kilo-ohms (kΩ) is 6700 Ω? =
4. 4.📏 How many milliamperes (mA) make 1 ampere? (a) 60 (b) 10 (c) 100 (d) 1000
5. 5.📏 Which unit measures the push of a cell? (a) ampere (A) (b) watt (W) (c) ohm (Ω) (d) volt (V)
6. 6.📏 In the water-pipe picture of a circuit, resistance is like … (a) a narrow pipe (b) the flow of water (c) the water pressure (d) a bigger tank
7. 7.📏 How many watts (W) is 1 kW?
8. 8.Which of these is measured in watts (W)? (a) resistance (b) the flow of charge (c) power (d) current
9. 9.True or false: the flow of charge is measured in amperes (A). (a) False (b) True
10. 10.📏 Which unit measures power? (a) volt (V) (b) ohm (Ω) (c) ampere (A) (d) watt (W)
11. 11.True or false: how much a part resists is measured in watts (W). (a) False (b) True
12. 12.📏 How many milliamperes (mA) is 2.91 A?
13. 13.True or false: the ammeter measures current. (a) False (b) True
14. 14.Which of these is measured in ohms (Ω)? (a) current (b) resistance (c) the push of a cell (d) the flow of charge
15. 15.True or false: the ammeter measures voltage. (a) True (b) False
16. 16.📏 Which unit measures current? (a) ohm (Ω) (b) volt (V) (c) watt (W) (d) ampere (A)
17. 17.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 1024 (b) 10 (c) 100 (d) 1000
18. 18.Which of these is measured in watts (W)? (a) how much a part resists (b) voltage (c) energy used each second (d) the flow of charge
19. 19.True or false: energy used each second is measured in volts (V). (a) False (b) True
20. 20.True or false: voltage is measured in ohms (Ω). (a) True (b) False
21. 21.True or false: the ammeter is joined in series. (a) True (b) False
22. 22.📏 Which unit measures voltage? (a) ohm (Ω) (b) watt (W) (c) volt (V) (d) ampere (A)
23. 23.True or false: energy used each second is measured in watts (W). (a) False (b) True
24. 24.📏 How many amperes (A) is 930 mA? =
25. 25.📏 How many amperes (A) is 870 mA? =
26. 26.Which of these is measured in ohms (Ω)? (a) current (b) voltage (c) how much a part resists (d) the flow of charge
27. 27.True or false: the voltmeter measures current. (a) True (b) False
28. 28.📏 In the water-pipe picture of a circuit, voltage is like … (a) the water tank lid (b) the pipe colour (c) the tap handle (d) the water pressure
29. 29.📏 Voltmeter or ammeter: which one measures current? (a) ammeter (b) voltmeter
30. 30.📏 How many milliamperes (mA) is 2.29 A?
31. 31.📏 Voltmeter or ammeter: which one measures voltage? (a) ammeter (b) voltmeter
32. 32.📏 How many milliamperes (mA) is 2.12 A?
33. 33.📏 Which unit measures how much a part resists? (a) watt (W) (b) volt (V) (c) ohm (Ω) (d) ampere (A)
34. 34.📏 How many watts (W) is 0.1 kW?
35. 35.True or false: the ammeter is joined across a part. (a) False (b) True
36. 36.📏 How many amperes (A) is 1040 mA? =
37. 37.📏 How many kilo-ohms (kΩ) is 8400 Ω? =
38. 38.📏 How many kilo-ohms (kΩ) is 8500 Ω? =
39. 39.📏 How many amperes (A) is 2230 mA? =
40. 40.Which of these is measured in amperes (A)? (a) voltage (b) energy used each second (c) power (d) current

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