Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 929 · 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) make 1 ampere? (a) 1000 (b) 10 (c) 100 (d) 60
2. 2.📏 Which unit measures how much a part resists? (a) ohm (Ω) (b) volt (V) (c) ampere (A) (d) watt (W)
3. 3.True or false: the ammeter measures voltage. (a) False (b) True
4. 4.📏 How many kilo-ohms (kΩ) is 7200 Ω? =
5. 5.📏 Which unit measures current? (a) volt (V) (b) ohm (Ω) (c) watt (W) (d) ampere (A)
6. 6.📏 Voltmeter or ammeter: which one measures voltage? (a) voltmeter (b) ammeter
7. 7.📏 Which unit measures resistance? (a) ampere (A) (b) watt (W) (c) volt (V) (d) ohm (Ω)
8. 8.📏 In the water-pipe picture of a circuit, voltage is like … (a) the water tank lid (b) the water pressure (c) the tap handle (d) the pipe colour
9. 9.📏 How many kilo-ohms (kΩ) is 600 Ω? =
10. 10.Which of these is measured in ohms (Ω)? (a) current (b) resistance (c) voltage (d) the flow of charge
11. 11.📏 Voltmeter or ammeter: which one is joined in series? (a) ammeter (b) voltmeter
12. 12.Which of these is measured in watts (W)? (a) the push of a cell (b) energy used each second (c) the flow of charge (d) current
13. 13.📏 Voltmeter or ammeter: which one is joined across a part? (a) ammeter (b) voltmeter
14. 14.📏 Voltmeter or ammeter: which one measures current? (a) voltmeter (b) ammeter
15. 15.True or false: the push of a cell is measured in volts (V). (a) False (b) True
16. 16.📏 Which unit measures the flow of charge? (a) volt (V) (b) ohm (Ω) (c) ampere (A) (d) watt (W)
17. 17.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 100 (b) 10 (c) 1024 (d) 1000
18. 18.📏 How many amperes (A) is 1540 mA? =
19. 19.📏 How many amperes (A) is 780 mA? =
20. 20.📏 How many amperes (A) is 2140 mA? =
21. 21.📏 Which unit measures energy used each second? (a) watt (W) (b) ampere (A) (c) ohm (Ω) (d) volt (V)
22. 22.📏 How many watts (W) is 4.1 kW?
23. 23.True or false: the voltmeter measures voltage. (a) False (b) True
24. 24.True or false: the ammeter is joined across a part. (a) True (b) False
25. 25.📏 Which unit measures voltage? (a) ohm (Ω) (b) ampere (A) (c) watt (W) (d) volt (V)
26. 26.True or false: how much a part resists is measured in ohms (Ω). (a) True (b) False
27. 27.📏 Which unit measures the push of a cell? (a) ohm (Ω) (b) ampere (A) (c) watt (W) (d) volt (V)
28. 28.📏 How many milliamperes (mA) is 1.1 A?
29. 29.📏 How many milliamperes (mA) is 1.62 A?
30. 30.True or false: energy used each second is measured in watts (W). (a) False (b) True
31. 31.📏 In the water-pipe picture of a circuit, current is like … (a) a narrow pipe (b) the pipe colour (c) the water pressure (d) the flow of water
32. 32.True or false: how much a part resists is measured in amperes (A). (a) False (b) True
33. 33.📏 How many kilo-ohms (kΩ) is 9100 Ω? =
34. 34.Which of these is measured in volts (V)? (a) voltage (b) current (c) resistance (d) the flow of charge
35. 35.📏 How many amperes (A) is 1190 mA? =
36. 36.📏 How many amperes (A) is 2000 mA? =
37. 37.📏 How many amperes (A) is 1520 mA? =
38. 38.📏 How many amperes (A) is 550 mA? =
39. 39.📏 How many kilowatts (kW) is 4300 W? =
40. 40.📏 How many milliamperes (mA) is 0.57 A?

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