Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 435 · 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.True or false: the ammeter is joined across a part. (a) True (b) False
2. 2.Which of these is measured in ohms (Ω)? (a) the push of a cell (b) resistance (c) current (d) the flow of charge
3. 3.📏 In the water-pipe picture of a circuit, voltage is like … (a) the tap handle (b) the water pressure (c) the pipe colour (d) the water tank lid
4. 4.📏 Which unit measures resistance? (a) ampere (A) (b) volt (V) (c) watt (W) (d) ohm (Ω)
5. 5.True or false: the voltmeter measures current. (a) True (b) False
6. 6.True or false: the voltmeter measures voltage. (a) True (b) False
7. 7.True or false: the voltmeter is joined across a part. (a) True (b) False
8. 8.📏 Which unit measures the flow of charge? (a) ohm (Ω) (b) ampere (A) (c) watt (W) (d) volt (V)
9. 9.True or false: the ammeter measures voltage. (a) True (b) False
10. 10.📏 Voltmeter or ammeter: which one measures voltage? (a) ammeter (b) voltmeter
11. 11.True or false: voltage is measured in volts (V). (a) True (b) False
12. 12.📏 How many kilowatts (kW) is 3750 W? =
13. 13.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 1024 (b) 100 (c) 1000 (d) 10
14. 14.📏 Which unit measures the push of a cell? (a) ampere (A) (b) volt (V) (c) watt (W) (d) ohm (Ω)
15. 15.True or false: power is measured in watts (W). (a) True (b) False
16. 16.📏 How many milliamperes (mA) make 1 ampere? (a) 1000 (b) 60 (c) 10 (d) 100
17. 17.📏 How many ohms (Ω) is 8.1 kΩ?
18. 18.True or false: the push of a cell is measured in volts (V). (a) True (b) False
19. 19.📏 Which unit measures current? (a) volt (V) (b) ampere (A) (c) watt (W) (d) ohm (Ω)
20. 20.📏 How many kilo-ohms (kΩ) is 5600 Ω? =
21. 21.True or false: the ammeter is joined in series. (a) False (b) True
22. 22.📏 Voltmeter or ammeter: which one measures current? (a) ammeter (b) voltmeter
23. 23.True or false: current is measured in amperes (A). (a) True (b) False
24. 24.📏 Voltmeter or ammeter: which one is joined in series? (a) voltmeter (b) ammeter
25. 25.📏 Which unit measures voltage? (a) watt (W) (b) volt (V) (c) ohm (Ω) (d) ampere (A)
26. 26.True or false: the push of a cell is measured in ohms (Ω). (a) True (b) False
27. 27.📏 How many watts (W) is 4.2 kW?
28. 28.📏 How many kilo-ohms (kΩ) is 3000 Ω? =
29. 29.📏 How many amperes (A) is 2880 mA? =
30. 30.📏 Which unit measures energy used each second? (a) ampere (A) (b) watt (W) (c) ohm (Ω) (d) volt (V)
31. 31.Which of these is measured in watts (W)? (a) resistance (b) the push of a cell (c) the flow of charge (d) power
32. 32.True or false: how much a part resists is measured in amperes (A). (a) False (b) True
33. 33.True or false: power is measured in amperes (A). (a) True (b) False
34. 34.Which of these is measured in watts (W)? (a) the push of a cell (b) the flow of charge (c) energy used each second (d) how much a part resists
35. 35.📏 How many milliamperes (mA) is 1.44 A?
36. 36.True or false: the flow of charge is measured in volts (V). (a) True (b) False
37. 37.True or false: resistance is measured in amperes (A). (a) False (b) True
38. 38.Which of these is measured in amperes (A)? (a) resistance (b) the push of a cell (c) power (d) current
39. 39.📏 How many amperes (A) is 2660 mA? =
40. 40.True or false: how much a part resists is measured in ohms (Ω). (a) True (b) False

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