Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 275 · 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 0.1 kW?
2. 2.Which of these is measured in volts (V)? (a) the flow of charge (b) energy used each second (c) how much a part resists (d) the push of a cell
3. 3.Which of these is measured in amperes (A)? (a) voltage (b) energy used each second (c) resistance (d) current
4. 4.Which of these is measured in ohms (Ω)? (a) power (b) current (c) the push of a cell (d) resistance
5. 5.True or false: the ammeter measures current. (a) True (b) False
6. 6.True or false: resistance is measured in volts (V). (a) False (b) True
7. 7.📏 Voltmeter or ammeter: which one measures voltage? (a) ammeter (b) voltmeter
8. 8.📏 In the water-pipe picture of a circuit, current is like … (a) the water pressure (b) the pipe colour (c) the flow of water (d) a narrow pipe
9. 9.📏 Voltmeter or ammeter: which one measures current? (a) voltmeter (b) ammeter
10. 10.📏 Which unit measures how much a part resists? (a) watt (W) (b) ampere (A) (c) volt (V) (d) ohm (Ω)
11. 11.📏 Which unit measures voltage? (a) ohm (Ω) (b) volt (V) (c) ampere (A) (d) watt (W)
12. 12.📏 How many amperes (A) is 630 mA? =
13. 13.Which of these is measured in watts (W)? (a) current (b) resistance (c) the push of a cell (d) power
14. 14.True or false: resistance is measured in amperes (A). (a) True (b) False
15. 15.📏 Which unit measures resistance? (a) watt (W) (b) ampere (A) (c) ohm (Ω) (d) volt (V)
16. 16.📏 How many watts (W) is 2.7 kW?
17. 17.True or false: current is measured in ohms (Ω). (a) False (b) True
18. 18.📏 How many watts (W) is 1 kW?
19. 19.📏 How many kilo-ohms (kΩ) is 5200 Ω? =
20. 20.📏 Which unit measures energy used each second? (a) volt (V) (b) ampere (A) (c) ohm (Ω) (d) watt (W)
21. 21.📏 How many kilowatts (kW) is 3200 W? =
22. 22.Which of these is measured in ohms (Ω)? (a) the flow of charge (b) how much a part resists (c) voltage (d) current
23. 23.📏 In the water-pipe picture of a circuit, resistance is like … (a) the water pressure (b) the flow of water (c) a narrow pipe (d) a bigger tank
24. 24.📏 How many amperes (A) is 280 mA? =
25. 25.📏 How many ohms (Ω) is 7.7 kΩ?
26. 26.📏 How many amperes (A) is 1400 mA? =
27. 27.📏 Voltmeter or ammeter: which one is joined in series? (a) voltmeter (b) ammeter
28. 28.📏 How many milliamperes (mA) make 1 ampere? (a) 1000 (b) 10 (c) 60 (d) 100
29. 29.True or false: the push of a cell is measured in volts (V). (a) False (b) True
30. 30.📏 How many milliamperes (mA) is 1.69 A?
31. 31.Which of these is measured in amperes (A)? (a) resistance (b) the flow of charge (c) energy used each second (d) the push of a cell
32. 32.📏 Voltmeter or ammeter: which one is joined across a part? (a) voltmeter (b) ammeter
33. 33.True or false: the voltmeter measures current. (a) False (b) True
34. 34.True or false: the voltmeter is joined across a part. (a) True (b) False
35. 35.📏 In the water-pipe picture of a circuit, voltage is like … (a) the water pressure (b) the water tank lid (c) the tap handle (d) the pipe colour
36. 36.📏 Which unit measures the flow of charge? (a) ampere (A) (b) watt (W) (c) volt (V) (d) ohm (Ω)
37. 37.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 10 (b) 100 (c) 1024 (d) 1000
38. 38.📏 How many kilo-ohms (kΩ) is 6300 Ω? =
39. 39.📏 How many kilowatts (kW) is 3450 W? =
40. 40.True or false: the ammeter measures voltage. (a) True (b) False

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