Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 872 · 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.📏 Which unit measures voltage? (a) ampere (A) (b) ohm (Ω) (c) watt (W) (d) volt (V)
2. 2.📏 How many amperes (A) is 1210 mA? =
3. 3.📏 Voltmeter or ammeter: which one measures voltage? (a) ammeter (b) voltmeter
4. 4.Which of these is measured in volts (V)? (a) the flow of charge (b) how much a part resists (c) the push of a cell (d) resistance
5. 5.Which of these is measured in volts (V)? (a) the flow of charge (b) voltage (c) power (d) resistance
6. 6.📏 In the water-pipe picture of a circuit, current is like … (a) the flow of water (b) the water pressure (c) the pipe colour (d) a narrow pipe
7. 7.📏 In the water-pipe picture of a circuit, resistance is like … (a) a narrow pipe (b) the flow of water (c) the water pressure (d) a bigger tank
8. 8.📏 Which unit measures current? (a) watt (W) (b) ohm (Ω) (c) ampere (A) (d) volt (V)
9. 9.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 1024 (b) 100 (c) 1000 (d) 10
10. 10.📏 How many kilo-ohms (kΩ) is 1800 Ω? =
11. 11.True or false: the ammeter measures voltage. (a) True (b) False
12. 12.📏 How many kilo-ohms (kΩ) is 4000 Ω? =
13. 13.📏 Voltmeter or ammeter: which one measures current? (a) ammeter (b) voltmeter
14. 14.📏 How many milliamperes (mA) make 1 ampere? (a) 10 (b) 1000 (c) 60 (d) 100
15. 15.📏 How many kilo-ohms (kΩ) is 9000 Ω? =
16. 16.📏 In the water-pipe picture of a circuit, voltage is like … (a) the tap handle (b) the water pressure (c) the water tank lid (d) the pipe colour
17. 17.📏 How many ohms (Ω) is 1.4 kΩ?
18. 18.📏 How many amperes (A) is 2400 mA? =
19. 19.📏 Which unit measures energy used each second? (a) watt (W) (b) ohm (Ω) (c) ampere (A) (d) volt (V)
20. 20.True or false: the voltmeter measures current. (a) True (b) False
21. 21.📏 How many kilowatts (kW) is 4250 W? =
22. 22.True or false: energy used each second is measured in ohms (Ω). (a) True (b) False
23. 23.True or false: how much a part resists is measured in amperes (A). (a) True (b) False
24. 24.Which of these is measured in amperes (A)? (a) power (b) the push of a cell (c) the flow of charge (d) how much a part resists
25. 25.📏 How many watts (W) is 2.2 kW?
26. 26.📏 How many amperes (A) is 90 mA? =
27. 27.📏 How many amperes (A) is 2330 mA? =
28. 28.📏 Which unit measures resistance? (a) watt (W) (b) ampere (A) (c) ohm (Ω) (d) volt (V)
29. 29.True or false: voltage is measured in volts (V). (a) False (b) True
30. 30.Which of these is measured in watts (W)? (a) the push of a cell (b) energy used each second (c) current (d) how much a part resists
31. 31.True or false: the ammeter is joined across a part. (a) True (b) False
32. 32.Which of these is measured in ohms (Ω)? (a) how much a part resists (b) the push of a cell (c) current (d) power
33. 33.Which of these is measured in amperes (A)? (a) voltage (b) current (c) resistance (d) the push of a cell
34. 34.📏 Which unit measures the flow of charge? (a) volt (V) (b) ampere (A) (c) watt (W) (d) ohm (Ω)
35. 35.📏 Which unit measures power? (a) ampere (A) (b) volt (V) (c) ohm (Ω) (d) watt (W)
36. 36.📏 How many amperes (A) is 1520 mA? =
37. 37.📏 Which unit measures how much a part resists? (a) watt (W) (b) ampere (A) (c) volt (V) (d) ohm (Ω)
38. 38.📏 How many kilo-ohms (kΩ) is 3300 Ω? =
39. 39.📏 How many kilowatts (kW) is 3900 W? =
40. 40.Which of these is measured in ohms (Ω)? (a) the push of a cell (b) resistance (c) energy used each second (d) power

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