Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 74 · 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: current is measured in amperes (A). (a) True (b) False
2. 2.📏 How many ohms (Ω) is 1.5 kΩ?
3. 3.Which of these is measured in ohms (Ω)? (a) the push of a cell (b) voltage (c) energy used each second (d) how much a part resists
4. 4.📏 How many kilo-ohms (kΩ) is 7500 Ω? =
5. 5.Which of these is measured in watts (W)? (a) the push of a cell (b) the flow of charge (c) power (d) voltage
6. 6.📏 How many milliamperes (mA) make 1 ampere? (a) 60 (b) 10 (c) 100 (d) 1000
7. 7.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 10 (b) 1000 (c) 1024 (d) 100
8. 8.📏 Which unit measures the flow of charge? (a) watt (W) (b) ampere (A) (c) volt (V) (d) ohm (Ω)
9. 9.📏 How many amperes (A) is 2820 mA? =
10. 10.📏 Which unit measures power? (a) ohm (Ω) (b) ampere (A) (c) volt (V) (d) watt (W)
11. 11.📏 In the water-pipe picture of a circuit, current is like … (a) the pipe colour (b) the flow of water (c) a narrow pipe (d) the water pressure
12. 12.True or false: energy used each second is measured in amperes (A). (a) False (b) True
13. 13.True or false: the voltmeter is joined in series. (a) False (b) True
14. 14.📏 Which unit measures resistance? (a) volt (V) (b) ampere (A) (c) watt (W) (d) ohm (Ω)
15. 15.📏 In the water-pipe picture of a circuit, resistance is like … (a) a bigger tank (b) the water pressure (c) a narrow pipe (d) the flow of water
16. 16.Which of these is measured in volts (V)? (a) energy used each second (b) voltage (c) current (d) resistance
17. 17.📏 How many kilowatts (kW) is 4400 W? =
18. 18.📏 In the water-pipe picture of a circuit, voltage is like … (a) the tap handle (b) the pipe colour (c) the water tank lid (d) the water pressure
19. 19.True or false: the voltmeter measures voltage. (a) True (b) False
20. 20.📏 Which unit measures voltage? (a) ohm (Ω) (b) ampere (A) (c) watt (W) (d) volt (V)
21. 21.📏 How many ohms (Ω) is 0.3 kΩ?
22. 22.True or false: energy used each second is measured in watts (W). (a) True (b) False
23. 23.📏 How many ohms (Ω) is 9.9 kΩ?
24. 24.📏 Which unit measures the push of a cell? (a) volt (V) (b) ampere (A) (c) ohm (Ω) (d) watt (W)
25. 25.📏 Voltmeter or ammeter: which one measures voltage? (a) ammeter (b) voltmeter
26. 26.📏 Voltmeter or ammeter: which one is joined across a part? (a) ammeter (b) voltmeter
27. 27.📏 How many kilowatts (kW) is 1200 W? =
28. 28.📏 How many amperes (A) is 1530 mA? =
29. 29.📏 Voltmeter or ammeter: which one measures current? (a) voltmeter (b) ammeter
30. 30.📏 Which unit measures energy used each second? (a) ohm (Ω) (b) volt (V) (c) watt (W) (d) ampere (A)
31. 31.📏 How many amperes (A) is 760 mA? =
32. 32.Which of these is measured in ohms (Ω)? (a) resistance (b) power (c) energy used each second (d) the push of a cell
33. 33.True or false: the ammeter measures voltage. (a) True (b) False
34. 34.📏 How many ohms (Ω) is 6.6 kΩ?
35. 35.📏 How many ohms (Ω) is 5.4 kΩ?
36. 36.📏 How many watts (W) is 1.4 kW?
37. 37.📏 Which unit measures how much a part resists? (a) ohm (Ω) (b) ampere (A) (c) watt (W) (d) volt (V)
38. 38.📏 How many milliamperes (mA) is 0.35 A?
39. 39.📏 How many kilowatts (kW) is 1550 W? =
40. 40.True or false: the ammeter is joined across a part. (a) True (b) False

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