Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 66 · 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 resistance? (a) volt (V) (b) watt (W) (c) ohm (Ω) (d) ampere (A)
2. 2.📏 In the water-pipe picture of a circuit, current is like … (a) the pipe colour (b) a narrow pipe (c) the flow of water (d) the water pressure
3. 3.📏 How many milliamperes (mA) is 0.78 A?
4. 4.📏 How many milliamperes (mA) make 1 ampere? (a) 100 (b) 1000 (c) 10 (d) 60
5. 5.📏 Which unit measures energy used each second? (a) watt (W) (b) ohm (Ω) (c) volt (V) (d) ampere (A)
6. 6.📏 Which unit measures power? (a) ampere (A) (b) ohm (Ω) (c) volt (V) (d) watt (W)
7. 7.📏 How many ohms (Ω) is 3.6 kΩ?
8. 8.📏 Which unit measures how much a part resists? (a) volt (V) (b) ampere (A) (c) ohm (Ω) (d) watt (W)
9. 9.True or false: the ammeter measures current. (a) False (b) True
10. 10.True or false: the voltmeter measures current. (a) True (b) False
11. 11.True or false: power is measured in ohms (Ω). (a) False (b) True
12. 12.📏 Which unit measures voltage? (a) volt (V) (b) watt (W) (c) ampere (A) (d) ohm (Ω)
13. 13.True or false: the ammeter measures voltage. (a) False (b) True
14. 14.True or false: voltage is measured in volts (V). (a) False (b) True
15. 15.📏 Which unit measures current? (a) watt (W) (b) ampere (A) (c) ohm (Ω) (d) volt (V)
16. 16.Which of these is measured in volts (V)? (a) energy used each second (b) current (c) voltage (d) resistance
17. 17.📏 How many kilo-ohms (kΩ) is 5900 Ω? =
18. 18.📏 How many ohms (Ω) is 0.4 kΩ?
19. 19.Which of these is measured in amperes (A)? (a) the push of a cell (b) energy used each second (c) the flow of charge (d) power
20. 20.📏 Which unit measures the flow of charge? (a) ohm (Ω) (b) volt (V) (c) watt (W) (d) ampere (A)
21. 21.📏 Voltmeter or ammeter: which one measures current? (a) voltmeter (b) ammeter
22. 22.Which of these is measured in watts (W)? (a) voltage (b) power (c) resistance (d) the push of a cell
23. 23.True or false: resistance is measured in amperes (A). (a) False (b) True
24. 24.True or false: the voltmeter measures voltage. (a) True (b) False
25. 25.Which of these is measured in ohms (Ω)? (a) the flow of charge (b) voltage (c) power (d) resistance
26. 26.📏 How many kilo-ohms (kΩ) is 5200 Ω? =
27. 27.True or false: the ammeter is joined across a part. (a) False (b) True
28. 28.📏 How many ohms (Ω) is 0.8 kΩ?
29. 29.Which of these is measured in volts (V)? (a) current (b) power (c) the push of a cell (d) how much a part resists
30. 30.📏 Which unit measures the push of a cell? (a) ampere (A) (b) watt (W) (c) volt (V) (d) ohm (Ω)
31. 31.True or false: the ammeter is joined in series. (a) True (b) False
32. 32.📏 How many kilo-ohms (kΩ) is 9600 Ω? =
33. 33.📏 Voltmeter or ammeter: which one is joined in series? (a) voltmeter (b) ammeter
34. 34.📏 How many kilo-ohms (kΩ) is 2100 Ω? =
35. 35.True or false: the voltmeter is joined across a part. (a) False (b) True
36. 36.📏 Voltmeter or ammeter: which one measures voltage? (a) ammeter (b) voltmeter
37. 37.True or false: how much a part resists is measured in amperes (A). (a) False (b) True
38. 38.📏 How many milliamperes (mA) is 1.85 A?
39. 39.📏 In the water-pipe picture of a circuit, voltage is like … (a) the tap handle (b) the water tank lid (c) the water pressure (d) the pipe colour
40. 40.True or false: power is measured in watts (W). (a) True (b) False

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