Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 575 · 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 milliamperes (mA) is 0.53 A?
2. 2.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 100 (b) 1000 (c) 10 (d) 1024
3. 3.📏 In the water-pipe picture of a circuit, resistance is like … (a) the flow of water (b) the water pressure (c) a narrow pipe (d) a bigger tank
4. 4.📏 How many watts (W) is 0.5 kW?
5. 5.Which of these is measured in ohms (Ω)? (a) power (b) the push of a cell (c) how much a part resists (d) current
6. 6.📏 Which unit measures energy used each second? (a) ohm (Ω) (b) watt (W) (c) volt (V) (d) ampere (A)
7. 7.📏 How many milliamperes (mA) is 0.21 A?
8. 8.📏 Which unit measures resistance? (a) volt (V) (b) ohm (Ω) (c) watt (W) (d) ampere (A)
9. 9.📏 How many amperes (A) is 130 mA? =
10. 10.True or false: the push of a cell is measured in ohms (Ω). (a) True (b) False
11. 11.📏 How many kilo-ohms (kΩ) is 4000 Ω? =
12. 12.Which of these is measured in watts (W)? (a) current (b) voltage (c) how much a part resists (d) energy used each second
13. 13.📏 How many milliamperes (mA) is 2.92 A?
14. 14.True or false: energy used each second is measured in amperes (A). (a) True (b) False
15. 15.📏 How many amperes (A) is 660 mA? =
16. 16.📏 How many ohms (Ω) is 6.1 kΩ?
17. 17.Which of these is measured in ohms (Ω)? (a) power (b) the push of a cell (c) the flow of charge (d) resistance
18. 18.True or false: how much a part resists is measured in ohms (Ω). (a) True (b) False
19. 19.📏 Which unit measures power? (a) volt (V) (b) ohm (Ω) (c) watt (W) (d) ampere (A)
20. 20.📏 Which unit measures the flow of charge? (a) watt (W) (b) ohm (Ω) (c) ampere (A) (d) volt (V)
21. 21.📏 How many ohms (Ω) is 4.6 kΩ?
22. 22.📏 Voltmeter or ammeter: which one measures current? (a) ammeter (b) voltmeter
23. 23.True or false: the ammeter is joined in series. (a) True (b) False
24. 24.True or false: current is measured in watts (W). (a) False (b) True
25. 25.Which of these is measured in volts (V)? (a) resistance (b) power (c) the push of a cell (d) current
26. 26.📏 In the water-pipe picture of a circuit, current is like … (a) the flow of water (b) a narrow pipe (c) the pipe colour (d) the water pressure
27. 27.📏 Voltmeter or ammeter: which one measures voltage? (a) voltmeter (b) ammeter
28. 28.True or false: energy used each second is measured in volts (V). (a) True (b) False
29. 29.True or false: the voltmeter measures current. (a) False (b) True
30. 30.📏 Voltmeter or ammeter: which one is joined across a part? (a) ammeter (b) voltmeter
31. 31.📏 How many kilo-ohms (kΩ) is 5800 Ω? =
32. 32.Which of these is measured in volts (V)? (a) voltage (b) energy used each second (c) how much a part resists (d) current
33. 33.📏 How many milliamperes (mA) make 1 ampere? (a) 1000 (b) 60 (c) 10 (d) 100
34. 34.📏 How many watts (W) is 3.5 kW?
35. 35.True or false: the ammeter measures current. (a) False (b) True
36. 36.📏 How many kilowatts (kW) is 2350 W? =
37. 37.📏 Which unit measures how much a part resists? (a) volt (V) (b) watt (W) (c) ohm (Ω) (d) ampere (A)
38. 38.Which of these is measured in watts (W)? (a) current (b) the push of a cell (c) voltage (d) power
39. 39.📏 How many ohms (Ω) is 2.1 kΩ?
40. 40.True or false: the push of a cell is measured in volts (V). (a) True (b) False

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