Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 11 · 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 flow of charge is measured in volts (V). (a) True (b) False
2. 2.📏 Voltmeter or ammeter: which one is joined across a part? (a) voltmeter (b) ammeter
3. 3.True or false: voltage is measured in volts (V). (a) True (b) False
4. 4.📏 Which unit measures power? (a) watt (W) (b) ohm (Ω) (c) ampere (A) (d) volt (V)
5. 5.True or false: the ammeter is joined across a part. (a) True (b) False
6. 6.📏 Which unit measures current? (a) volt (V) (b) watt (W) (c) ampere (A) (d) ohm (Ω)
7. 7.📏 In the water-pipe picture of a circuit, current is like … (a) the water pressure (b) the pipe colour (c) a narrow pipe (d) the flow of water
8. 8.True or false: the ammeter measures voltage. (a) False (b) True
9. 9.📏 In the water-pipe picture of a circuit, voltage is like … (a) the pipe colour (b) the tap handle (c) the water pressure (d) the water tank lid
10. 10.📏 How many kilo-ohms (kΩ) is 1200 Ω? =
11. 11.📏 How many amperes (A) is 2450 mA? =
12. 12.True or false: the voltmeter measures voltage. (a) False (b) True
13. 13.True or false: the push of a cell is measured in volts (V). (a) False (b) True
14. 14.📏 Which unit measures energy used each second? (a) watt (W) (b) ampere (A) (c) ohm (Ω) (d) volt (V)
15. 15.True or false: current is measured in volts (V). (a) True (b) False
16. 16.📏 How many kilo-ohms (kΩ) is 1300 Ω? =
17. 17.📏 How many ohms (Ω) is 4.5 kΩ?
18. 18.True or false: current is measured in watts (W). (a) True (b) False
19. 19.True or false: resistance is measured in ohms (Ω). (a) False (b) True
20. 20.📏 How many milliamperes (mA) is 0.89 A?
21. 21.Which of these is measured in volts (V)? (a) power (b) how much a part resists (c) current (d) the push of a cell
22. 22.📏 How many amperes (A) is 2140 mA? =
23. 23.📏 How many kilo-ohms (kΩ) is 700 Ω? =
24. 24.Which of these is measured in ohms (Ω)? (a) energy used each second (b) the flow of charge (c) resistance (d) the push of a cell
25. 25.📏 How many kilowatts (kW) is 4350 W? =
26. 26.📏 How many watts (W) is 3.3 kW?
27. 27.True or false: the voltmeter measures current. (a) False (b) True
28. 28.True or false: how much a part resists is measured in amperes (A). (a) True (b) False
29. 29.True or false: voltage is measured in ohms (Ω). (a) True (b) False
30. 30.True or false: the flow of charge is measured in watts (W). (a) True (b) False
31. 31.📏 How many amperes (A) is 1250 mA? =
32. 32.📏 Which unit measures voltage? (a) ampere (A) (b) volt (V) (c) ohm (Ω) (d) watt (W)
33. 33.Which of these is measured in ohms (Ω)? (a) power (b) current (c) the push of a cell (d) how much a part resists
34. 34.📏 How many watts (W) is 3.7 kW?
35. 35.📏 How many milliamperes (mA) is 0.28 A?
36. 36.📏 Voltmeter or ammeter: which one measures voltage? (a) ammeter (b) voltmeter
37. 37.Which of these is measured in volts (V)? (a) current (b) the flow of charge (c) how much a part resists (d) voltage
38. 38.True or false: current is measured in ohms (Ω). (a) False (b) True
39. 39.📏 How many kilo-ohms (kΩ) is 100 Ω? =
40. 40.📏 How many watts (W) is 0.9 kW?

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