Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 684 · 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 ohms make 1 kilo-ohm (kΩ)? (a) 10 (b) 100 (c) 1000 (d) 1024
2. 2.📏 How many milliamperes (mA) is 2.53 A?
3. 3.True or false: the ammeter is joined in series. (a) False (b) True
4. 4.📏 How many milliamperes (mA) make 1 ampere? (a) 100 (b) 60 (c) 1000 (d) 10
5. 5.📏 How many ohms (Ω) is 8.4 kΩ?
6. 6.Which of these is measured in watts (W)? (a) resistance (b) how much a part resists (c) current (d) energy used each second
7. 7.📏 How many kilowatts (kW) is 1050 W? =
8. 8.📏 How many ohms (Ω) is 3.4 kΩ?
9. 9.📏 Which unit measures how much a part resists? (a) ampere (A) (b) volt (V) (c) watt (W) (d) ohm (Ω)
10. 10.📏 How many amperes (A) is 2010 mA? =
11. 11.True or false: energy used each second is measured in ohms (Ω). (a) True (b) False
12. 12.Which of these is measured in volts (V)? (a) power (b) the flow of charge (c) current (d) voltage
13. 13.True or false: voltage is measured in amperes (A). (a) False (b) True
14. 14.True or false: how much a part resists is measured in volts (V). (a) True (b) False
15. 15.📏 Which unit measures power? (a) ampere (A) (b) watt (W) (c) volt (V) (d) ohm (Ω)
16. 16.📏 How many watts (W) is 4.2 kW?
17. 17.📏 Which unit measures voltage? (a) watt (W) (b) ohm (Ω) (c) ampere (A) (d) volt (V)
18. 18.True or false: the voltmeter is joined across a part. (a) True (b) False
19. 19.True or false: the push of a cell is measured in volts (V). (a) False (b) True
20. 20.Which of these is measured in ohms (Ω)? (a) the push of a cell (b) voltage (c) how much a part resists (d) power
21. 21.📏 In the water-pipe picture of a circuit, resistance is like … (a) the flow of water (b) a narrow pipe (c) a bigger tank (d) the water pressure
22. 22.True or false: the push of a cell is measured in ohms (Ω). (a) True (b) False
23. 23.📏 Voltmeter or ammeter: which one measures current? (a) ammeter (b) voltmeter
24. 24.📏 In the water-pipe picture of a circuit, voltage is like … (a) the tap handle (b) the water tank lid (c) the water pressure (d) the pipe colour
25. 25.True or false: energy used each second is measured in watts (W). (a) False (b) True
26. 26.True or false: the ammeter measures current. (a) True (b) False
27. 27.📏 Voltmeter or ammeter: which one is joined in series? (a) ammeter (b) voltmeter
28. 28.📏 How many amperes (A) is 1870 mA? =
29. 29.📏 How many amperes (A) is 470 mA? =
30. 30.📏 How many amperes (A) is 400 mA? =
31. 31.📏 How many watts (W) is 3.4 kW?
32. 32.📏 How many milliamperes (mA) is 1.57 A?
33. 33.True or false: current is measured in volts (V). (a) True (b) False
34. 34.📏 How many amperes (A) is 840 mA? =
35. 35.📏 How many kilo-ohms (kΩ) is 1000 Ω? =
36. 36.📏 Which unit measures energy used each second? (a) watt (W) (b) volt (V) (c) ampere (A) (d) ohm (Ω)
37. 37.True or false: the voltmeter is joined in series. (a) True (b) False
38. 38.📏 How many milliamperes (mA) is 2.15 A?
39. 39.Which of these is measured in volts (V)? (a) the push of a cell (b) power (c) energy used each second (d) the flow of charge
40. 40.📏 How many ohms (Ω) is 6.7 kΩ?

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