Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 763 · 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: voltage is measured in watts (W). (a) False (b) True
2. 2.📏 How many milliamperes (mA) is 1.91 A?
3. 3.📏 How many amperes (A) is 2250 mA? =
4. 4.📏 In the water-pipe picture of a circuit, resistance is like … (a) a narrow pipe (b) the flow of water (c) a bigger tank (d) the water pressure
5. 5.📏 How many amperes (A) is 2490 mA? =
6. 6.True or false: the push of a cell is measured in watts (W). (a) True (b) False
7. 7.True or false: the ammeter measures voltage. (a) True (b) False
8. 8.Which of these is measured in ohms (Ω)? (a) the flow of charge (b) energy used each second (c) power (d) resistance
9. 9.📏 Voltmeter or ammeter: which one measures current? (a) voltmeter (b) ammeter
10. 10.Which of these is measured in volts (V)? (a) resistance (b) energy used each second (c) how much a part resists (d) the push of a cell
11. 11.📏 Which unit measures voltage? (a) watt (W) (b) ampere (A) (c) ohm (Ω) (d) volt (V)
12. 12.📏 In the water-pipe picture of a circuit, voltage is like … (a) the pipe colour (b) the water pressure (c) the water tank lid (d) the tap handle
13. 13.True or false: energy used each second is measured in amperes (A). (a) True (b) False
14. 14.📏 How many ohms (Ω) is 4.8 kΩ?
15. 15.📏 Which unit measures energy used each second? (a) ohm (Ω) (b) ampere (A) (c) volt (V) (d) watt (W)
16. 16.True or false: voltage is measured in volts (V). (a) False (b) True
17. 17.True or false: the flow of charge is measured in ohms (Ω). (a) True (b) False
18. 18.📏 How many amperes (A) is 1210 mA? =
19. 19.📏 How many watts (W) is 3.4 kW?
20. 20.📏 How many kilo-ohms (kΩ) is 2400 Ω? =
21. 21.True or false: the push of a cell is measured in amperes (A). (a) True (b) False
22. 22.Which of these is measured in amperes (A)? (a) voltage (b) energy used each second (c) how much a part resists (d) the flow of charge
23. 23.True or false: how much a part resists is measured in amperes (A). (a) True (b) False
24. 24.📏 Which unit measures current? (a) volt (V) (b) watt (W) (c) ohm (Ω) (d) ampere (A)
25. 25.Which of these is measured in volts (V)? (a) current (b) how much a part resists (c) power (d) voltage
26. 26.📏 How many kilo-ohms (kΩ) is 300 Ω? =
27. 27.True or false: energy used each second is measured in watts (W). (a) True (b) False
28. 28.True or false: the voltmeter is joined across a part. (a) False (b) True
29. 29.📏 How many milliamperes (mA) is 0.46 A?
30. 30.📏 How many watts (W) is 3.3 kW?
31. 31.📏 Voltmeter or ammeter: which one is joined across a part? (a) ammeter (b) voltmeter
32. 32.True or false: voltage is measured in ohms (Ω). (a) True (b) False
33. 33.True or false: current is measured in watts (W). (a) True (b) False
34. 34.📏 How many watts (W) is 2.2 kW?
35. 35.📏 How many kilowatts (kW) is 4600 W? =
36. 36.📏 Which unit measures power? (a) ampere (A) (b) ohm (Ω) (c) volt (V) (d) watt (W)
37. 37.📏 Which unit measures how much a part resists? (a) ampere (A) (b) volt (V) (c) watt (W) (d) ohm (Ω)
38. 38.📏 How many milliamperes (mA) is 2.25 A?
39. 39.📏 How many kilo-ohms (kΩ) is 1900 Ω? =
40. 40.📏 How many kilo-ohms (kΩ) is 9700 Ω? =

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