Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 831 · 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.📏 Voltmeter or ammeter: which one measures voltage? (a) ammeter (b) voltmeter
2. 2.📏 Voltmeter or ammeter: which one is joined in series? (a) voltmeter (b) ammeter
3. 3.📏 In the water-pipe picture of a circuit, voltage is like … (a) the water pressure (b) the tap handle (c) the pipe colour (d) the water tank lid
4. 4.Which of these is measured in amperes (A)? (a) the flow of charge (b) energy used each second (c) resistance (d) the push of a cell
5. 5.📏 How many amperes (A) is 750 mA? =
6. 6.True or false: power is measured in watts (W). (a) False (b) True
7. 7.Which of these is measured in watts (W)? (a) current (b) energy used each second (c) how much a part resists (d) resistance
8. 8.True or false: voltage is measured in volts (V). (a) True (b) False
9. 9.📏 Which unit measures power? (a) volt (V) (b) ampere (A) (c) watt (W) (d) ohm (Ω)
10. 10.📏 Voltmeter or ammeter: which one is joined across a part? (a) voltmeter (b) ammeter
11. 11.Which of these is measured in ohms (Ω)? (a) power (b) voltage (c) resistance (d) current
12. 12.Which of these is measured in watts (W)? (a) voltage (b) the push of a cell (c) resistance (d) power
13. 13.True or false: the ammeter measures voltage. (a) True (b) False
14. 14.True or false: energy used each second is measured in watts (W). (a) False (b) True
15. 15.📏 How many milliamperes (mA) is 0.09 A?
16. 16.True or false: the flow of charge is measured in amperes (A). (a) True (b) False
17. 17.True or false: how much a part resists is measured in volts (V). (a) False (b) True
18. 18.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 100 (b) 1024 (c) 10 (d) 1000
19. 19.Which of these is measured in amperes (A)? (a) the push of a cell (b) how much a part resists (c) voltage (d) current
20. 20.📏 Which unit measures how much a part resists? (a) ampere (A) (b) volt (V) (c) watt (W) (d) ohm (Ω)
21. 21.True or false: how much a part resists is measured in ohms (Ω). (a) True (b) False
22. 22.True or false: how much a part resists is measured in watts (W). (a) False (b) True
23. 23.📏 How many amperes (A) is 60 mA? =
24. 24.📏 How many ohms (Ω) is 7.9 kΩ?
25. 25.📏 How many amperes (A) is 970 mA? =
26. 26.📏 How many amperes (A) is 2390 mA? =
27. 27.📏 How many kilowatts (kW) is 100 W? =
28. 28.True or false: resistance is measured in volts (V). (a) True (b) False
29. 29.📏 Which unit measures the push of a cell? (a) watt (W) (b) ohm (Ω) (c) volt (V) (d) ampere (A)
30. 30.📏 How many milliamperes (mA) make 1 ampere? (a) 60 (b) 1000 (c) 100 (d) 10
31. 31.📏 Which unit measures voltage? (a) volt (V) (b) watt (W) (c) ohm (Ω) (d) ampere (A)
32. 32.📏 In the water-pipe picture of a circuit, resistance is like … (a) the flow of water (b) a narrow pipe (c) the water pressure (d) a bigger tank
33. 33.📏 Which unit measures energy used each second? (a) ampere (A) (b) volt (V) (c) ohm (Ω) (d) watt (W)
34. 34.📏 How many milliamperes (mA) is 0.95 A?
35. 35.Which of these is measured in ohms (Ω)? (a) power (b) how much a part resists (c) voltage (d) the push of a cell
36. 36.True or false: current is measured in ohms (Ω). (a) True (b) False
37. 37.Which of these is measured in volts (V)? (a) current (b) the flow of charge (c) the push of a cell (d) power
38. 38.📏 How many ohms (Ω) is 3.3 kΩ?
39. 39.📏 How many watts (W) is 2.8 kW?
40. 40.📏 How many kilo-ohms (kΩ) is 8000 Ω? =

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