Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 365 · 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 energy used each second? (a) ohm (Ω) (b) watt (W) (c) ampere (A) (d) volt (V)
2. 2.True or false: power is measured in watts (W). (a) False (b) True
3. 3.📏 Which unit measures power? (a) ampere (A) (b) watt (W) (c) volt (V) (d) ohm (Ω)
4. 4.📏 How many ohms (Ω) is 6.1 kΩ?
5. 5.Which of these is measured in amperes (A)? (a) energy used each second (b) power (c) the push of a cell (d) current
6. 6.Which of these is measured in watts (W)? (a) the flow of charge (b) current (c) energy used each second (d) the push of a cell
7. 7.📏 Voltmeter or ammeter: which one is joined in series? (a) ammeter (b) voltmeter
8. 8.📏 How many amperes (A) is 1960 mA? =
9. 9.Which of these is measured in volts (V)? (a) power (b) the flow of charge (c) voltage (d) energy used each second
10. 10.True or false: the push of a cell is measured in volts (V). (a) True (b) False
11. 11.Which of these is measured in watts (W)? (a) the push of a cell (b) resistance (c) power (d) the flow of charge
12. 12.📏 How many milliamperes (mA) make 1 ampere? (a) 100 (b) 60 (c) 10 (d) 1000
13. 13.📏 How many milliamperes (mA) is 0.44 A?
14. 14.📏 How many amperes (A) is 520 mA? =
15. 15.True or false: how much a part resists is measured in ohms (Ω). (a) True (b) False
16. 16.📏 Which unit measures voltage? (a) ohm (Ω) (b) watt (W) (c) ampere (A) (d) volt (V)
17. 17.True or false: how much a part resists is measured in volts (V). (a) True (b) False
18. 18.📏 Voltmeter or ammeter: which one measures current? (a) ammeter (b) voltmeter
19. 19.📏 Which unit measures how much a part resists? (a) ampere (A) (b) volt (V) (c) watt (W) (d) ohm (Ω)
20. 20.📏 How many kilo-ohms (kΩ) is 4800 Ω? =
21. 21.📏 In the water-pipe picture of a circuit, current is like … (a) the pipe colour (b) a narrow pipe (c) the flow of water (d) the water pressure
22. 22.📏 How many milliamperes (mA) is 0.62 A?
23. 23.📏 Which unit measures current? (a) watt (W) (b) volt (V) (c) ampere (A) (d) ohm (Ω)
24. 24.📏 How many kilowatts (kW) is 2750 W? =
25. 25.True or false: the ammeter is joined across a part. (a) False (b) True
26. 26.📏 How many milliamperes (mA) is 1.26 A?
27. 27.True or false: current is measured in amperes (A). (a) False (b) True
28. 28.📏 How many milliamperes (mA) is 0.17 A?
29. 29.📏 How many kilowatts (kW) is 1350 W? =
30. 30.📏 Which unit measures resistance? (a) ampere (A) (b) volt (V) (c) ohm (Ω) (d) watt (W)
31. 31.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 1000 (b) 10 (c) 100 (d) 1024
32. 32.📏 How many ohms (Ω) is 4.1 kΩ?
33. 33.Which of these is measured in amperes (A)? (a) voltage (b) how much a part resists (c) power (d) the flow of charge
34. 34.True or false: the voltmeter measures current. (a) True (b) False
35. 35.True or false: the voltmeter is joined in series. (a) True (b) False
36. 36.📏 In the water-pipe picture of a circuit, voltage is like … (a) the water tank lid (b) the water pressure (c) the tap handle (d) the pipe colour
37. 37.📏 How many milliamperes (mA) is 2.12 A?
38. 38.📏 Voltmeter or ammeter: which one is joined across a part? (a) ammeter (b) voltmeter
39. 39.📏 How many milliamperes (mA) is 0.42 A?
40. 40.📏 How many kilo-ohms (kΩ) is 8800 Ω? =

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