Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 347 · 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 kilo-ohms (kΩ) is 7800 Ω? =
2. 2.📏 Voltmeter or ammeter: which one measures current? (a) ammeter (b) voltmeter
3. 3.True or false: the push of a cell is measured in volts (V). (a) True (b) False
4. 4.📏 Voltmeter or ammeter: which one is joined in series? (a) ammeter (b) voltmeter
5. 5.📏 How many amperes (A) is 370 mA? =
6. 6.📏 In the water-pipe picture of a circuit, current is like … (a) the flow of water (b) the pipe colour (c) the water pressure (d) a narrow pipe
7. 7.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
8. 8.Which of these is measured in ohms (Ω)? (a) power (b) the push of a cell (c) resistance (d) current
9. 9.📏 How many kilowatts (kW) is 650 W? =
10. 10.📏 Voltmeter or ammeter: which one measures voltage? (a) voltmeter (b) ammeter
11. 11.📏 How many watts (W) is 4 kW?
12. 12.True or false: the ammeter is joined across a part. (a) False (b) True
13. 13.📏 How many amperes (A) is 2820 mA? =
14. 14.📏 How many amperes (A) is 2770 mA? =
15. 15.📏 Which unit measures power? (a) volt (V) (b) ohm (Ω) (c) ampere (A) (d) watt (W)
16. 16.True or false: current is measured in ohms (Ω). (a) True (b) False
17. 17.True or false: the voltmeter measures voltage. (a) False (b) True
18. 18.📏 How many milliamperes (mA) make 1 ampere? (a) 60 (b) 10 (c) 100 (d) 1000
19. 19.True or false: the ammeter is joined in series. (a) False (b) True
20. 20.📏 How many kilo-ohms (kΩ) is 8600 Ω? =
21. 21.📏 How many milliamperes (mA) is 0.58 A?
22. 22.📏 Which unit measures how much a part resists? (a) watt (W) (b) volt (V) (c) ampere (A) (d) ohm (Ω)
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 850 mA? =
25. 25.📏 How many amperes (A) is 240 mA? =
26. 26.📏 How many amperes (A) is 1600 mA? =
27. 27.📏 How many kilo-ohms (kΩ) is 6300 Ω? =
28. 28.True or false: the ammeter measures voltage. (a) True (b) False
29. 29.True or false: how much a part resists is measured in ohms (Ω). (a) False (b) True
30. 30.📏 Which unit measures the push of a cell? (a) watt (W) (b) ampere (A) (c) ohm (Ω) (d) volt (V)
31. 31.📏 Which unit measures current? (a) ampere (A) (b) ohm (Ω) (c) watt (W) (d) volt (V)
32. 32.Which of these is measured in amperes (A)? (a) resistance (b) power (c) voltage (d) the flow of charge
33. 33.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 1024 (b) 1000 (c) 100 (d) 10
34. 34.📏 How many watts (W) is 1.7 kW?
35. 35.📏 Which unit measures resistance? (a) watt (W) (b) ohm (Ω) (c) volt (V) (d) ampere (A)
36. 36.Which of these is measured in watts (W)? (a) power (b) the push of a cell (c) current (d) how much a part resists
37. 37.True or false: current is measured in volts (V). (a) True (b) False
38. 38.📏 How many milliamperes (mA) is 2.33 A?
39. 39.📏 Which unit measures voltage? (a) watt (W) (b) volt (V) (c) ampere (A) (d) ohm (Ω)
40. 40.True or false: power is measured in amperes (A). (a) False (b) True

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