Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 304 · 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.📏 Which unit measures current? (a) ampere (A) (b) ohm (Ω) (c) volt (V) (d) watt (W)
2. 2.📏 Voltmeter or ammeter: which one measures current? (a) ammeter (b) voltmeter
3. 3.📏 How many amperes (A) is 1750 mA? =
4. 4.📏 How many kilowatts (kW) is 4550 W? =
5. 5.📏 Voltmeter or ammeter: which one is joined across a part? (a) voltmeter (b) ammeter
6. 6.True or false: the voltmeter is joined across a part. (a) False (b) True
7. 7.📏 How many kilo-ohms (kΩ) is 3100 Ω? =
8. 8.True or false: the ammeter is joined across a part. (a) True (b) False
9. 9.📏 Which unit measures how much a part resists? (a) watt (W) (b) volt (V) (c) ampere (A) (d) ohm (Ω)
10. 10.📏 Voltmeter or ammeter: which one is joined in series? (a) voltmeter (b) ammeter
11. 11.📏 In the water-pipe picture of a circuit, resistance is like … (a) the flow of water (b) the water pressure (c) a bigger tank (d) a narrow pipe
12. 12.📏 How many milliamperes (mA) is 0.45 A?
13. 13.📏 Which unit measures power? (a) watt (W) (b) ohm (Ω) (c) ampere (A) (d) volt (V)
14. 14.Which of these is measured in amperes (A)? (a) power (b) the push of a cell (c) the flow of charge (d) resistance
15. 15.📏 Voltmeter or ammeter: which one measures voltage? (a) ammeter (b) voltmeter
16. 16.Which of these is measured in volts (V)? (a) power (b) how much a part resists (c) energy used each second (d) the push of a cell
17. 17.📏 How many amperes (A) is 2820 mA? =
18. 18.True or false: how much a part resists is measured in watts (W). (a) True (b) False
19. 19.📏 How many milliamperes (mA) is 1.08 A?
20. 20.Which of these is measured in amperes (A)? (a) voltage (b) the push of a cell (c) resistance (d) current
21. 21.Which of these is measured in watts (W)? (a) resistance (b) energy used each second (c) voltage (d) current
22. 22.📏 Which unit measures resistance? (a) ohm (Ω) (b) ampere (A) (c) watt (W) (d) volt (V)
23. 23.True or false: voltage is measured in amperes (A). (a) False (b) True
24. 24.True or false: current is measured in amperes (A). (a) False (b) True
25. 25.📏 Which unit measures the flow of charge? (a) ohm (Ω) (b) ampere (A) (c) watt (W) (d) volt (V)
26. 26.📏 In the water-pipe picture of a circuit, current is like … (a) a narrow pipe (b) the water pressure (c) the flow of water (d) the pipe colour
27. 27.📏 How many watts (W) is 3.4 kW?
28. 28.True or false: the voltmeter measures current. (a) True (b) False
29. 29.📏 How many amperes (A) is 70 mA? =
30. 30.📏 How many kilo-ohms (kΩ) is 1200 Ω? =
31. 31.Which of these is measured in volts (V)? (a) the flow of charge (b) how much a part resists (c) voltage (d) power
32. 32.True or false: the voltmeter measures voltage. (a) False (b) True
33. 33.📏 How many amperes (A) is 1990 mA? =
34. 34.📏 How many milliamperes (mA) make 1 ampere? (a) 10 (b) 60 (c) 1000 (d) 100
35. 35.📏 In the water-pipe picture of a circuit, voltage is like … (a) the water tank lid (b) the pipe colour (c) the water pressure (d) the tap handle
36. 36.True or false: how much a part resists is measured in amperes (A). (a) False (b) True
37. 37.📏 How many ohms (Ω) is 1.6 kΩ?
38. 38.True or false: current is measured in watts (W). (a) True (b) False
39. 39.Which of these is measured in ohms (Ω)? (a) the flow of charge (b) current (c) the push of a cell (d) resistance
40. 40.📏 How many amperes (A) is 1830 mA? =

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