Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 174 · 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.📏 How many watts (W) is 4.6 kW?
2. 2.📏 How many milliamperes (mA) is 0.12 A?
3. 3.True or false: how much a part resists is measured in ohms (Ω). (a) True (b) False
4. 4.📏 Which unit measures the push of a cell? (a) volt (V) (b) ohm (Ω) (c) watt (W) (d) ampere (A)
5. 5.Which of these is measured in volts (V)? (a) energy used each second (b) how much a part resists (c) power (d) the push of a cell
6. 6.📏 How many amperes (A) is 1760 mA? =
7. 7.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 1024 (b) 100 (c) 10 (d) 1000
8. 8.📏 In the water-pipe picture of a circuit, current is like … (a) the pipe colour (b) the water pressure (c) the flow of water (d) a narrow pipe
9. 9.📏 Which unit measures voltage? (a) volt (V) (b) ampere (A) (c) ohm (Ω) (d) watt (W)
10. 10.📏 Voltmeter or ammeter: which one measures voltage? (a) voltmeter (b) ammeter
11. 11.True or false: the voltmeter is joined in series. (a) True (b) False
12. 12.📏 Voltmeter or ammeter: which one is joined in series? (a) ammeter (b) voltmeter
13. 13.📏 How many kilowatts (kW) is 400 W? =
14. 14.📏 Voltmeter or ammeter: which one measures current? (a) ammeter (b) voltmeter
15. 15.📏 Which unit measures the flow of charge? (a) watt (W) (b) ampere (A) (c) ohm (Ω) (d) volt (V)
16. 16.📏 How many watts (W) is 2.8 kW?
17. 17.Which of these is measured in ohms (Ω)? (a) how much a part resists (b) the push of a cell (c) energy used each second (d) current
18. 18.True or false: the voltmeter measures current. (a) False (b) True
19. 19.Which of these is measured in watts (W)? (a) energy used each second (b) resistance (c) voltage (d) the push of a cell
20. 20.True or false: the ammeter measures voltage. (a) False (b) True
21. 21.📏 In the water-pipe picture of a circuit, voltage is like … (a) the tap handle (b) the pipe colour (c) the water pressure (d) the water tank lid
22. 22.True or false: the flow of charge is measured in watts (W). (a) False (b) True
23. 23.True or false: the voltmeter measures voltage. (a) True (b) False
24. 24.📏 How many milliamperes (mA) is 2.24 A?
25. 25.📏 How many ohms (Ω) is 8.7 kΩ?
26. 26.Which of these is measured in amperes (A)? (a) energy used each second (b) power (c) current (d) how much a part resists
27. 27.Which of these is measured in watts (W)? (a) the push of a cell (b) resistance (c) the flow of charge (d) power
28. 28.True or false: the ammeter is joined across a part. (a) False (b) True
29. 29.True or false: current is measured in ohms (Ω). (a) False (b) True
30. 30.📏 How many ohms (Ω) is 8.5 kΩ?
31. 31.📏 How many milliamperes (mA) is 2.4 A?
32. 32.📏 How many amperes (A) is 2650 mA? =
33. 33.📏 How many ohms (Ω) is 2.4 kΩ?
34. 34.📏 How many ohms (Ω) is 9.7 kΩ?
35. 35.📏 How many ohms (Ω) is 9.2 kΩ?
36. 36.📏 Which unit measures resistance? (a) ampere (A) (b) ohm (Ω) (c) watt (W) (d) volt (V)
37. 37.Which of these is measured in ohms (Ω)? (a) energy used each second (b) resistance (c) current (d) voltage
38. 38.📏 Voltmeter or ammeter: which one is joined across a part? (a) voltmeter (b) ammeter
39. 39.📏 How many milliamperes (mA) is 1.7 A?
40. 40.True or false: the push of a cell is measured in watts (W). (a) True (b) False

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