Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 711 · 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 how much a part resists? (a) volt (V) (b) ampere (A) (c) ohm (Ω) (d) watt (W)
2. 2.📏 Which unit measures the push of a cell? (a) ohm (Ω) (b) watt (W) (c) ampere (A) (d) volt (V)
3. 3.📏 How many milliamperes (mA) make 1 ampere? (a) 10 (b) 1000 (c) 60 (d) 100
4. 4.📏 In the water-pipe picture of a circuit, voltage is like … (a) the water tank lid (b) the pipe colour (c) the water pressure (d) the tap handle
5. 5.True or false: the push of a cell is measured in amperes (A). (a) True (b) False
6. 6.📏 Voltmeter or ammeter: which one is joined across a part? (a) ammeter (b) voltmeter
7. 7.📏 How many kilo-ohms (kΩ) is 6100 Ω? =
8. 8.Which of these is measured in ohms (Ω)? (a) voltage (b) energy used each second (c) how much a part resists (d) the flow of charge
9. 9.📏 How many milliamperes (mA) is 0.43 A?
10. 10.True or false: the ammeter is joined in series. (a) False (b) True
11. 11.True or false: the ammeter measures current. (a) False (b) True
12. 12.📏 Which unit measures resistance? (a) ampere (A) (b) ohm (Ω) (c) volt (V) (d) watt (W)
13. 13.📏 How many kilo-ohms (kΩ) is 9200 Ω? =
14. 14.Which of these is measured in watts (W)? (a) power (b) the push of a cell (c) resistance (d) the flow of charge
15. 15.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 1024 (b) 1000 (c) 10 (d) 100
16. 16.📏 How many kilowatts (kW) is 1700 W? =
17. 17.📏 How many amperes (A) is 1670 mA? =
18. 18.📏 Which unit measures current? (a) ampere (A) (b) watt (W) (c) ohm (Ω) (d) volt (V)
19. 19.📏 How many milliamperes (mA) is 2.33 A?
20. 20.📏 Which unit measures the flow of charge? (a) watt (W) (b) volt (V) (c) ohm (Ω) (d) ampere (A)
21. 21.True or false: voltage is measured in amperes (A). (a) True (b) False
22. 22.📏 How many amperes (A) is 470 mA? =
23. 23.True or false: the ammeter measures voltage. (a) False (b) True
24. 24.Which of these is measured in ohms (Ω)? (a) resistance (b) the push of a cell (c) energy used each second (d) power
25. 25.📏 Voltmeter or ammeter: which one measures voltage? (a) ammeter (b) voltmeter
26. 26.Which of these is measured in watts (W)? (a) energy used each second (b) the push of a cell (c) the flow of charge (d) resistance
27. 27.📏 In the water-pipe picture of a circuit, resistance is like … (a) the water pressure (b) a bigger tank (c) the flow of water (d) a narrow pipe
28. 28.📏 How many kilo-ohms (kΩ) is 4000 Ω? =
29. 29.True or false: the push of a cell is measured in volts (V). (a) False (b) True
30. 30.📏 How many milliamperes (mA) is 0.88 A?
31. 31.True or false: the voltmeter is joined in series. (a) True (b) False
32. 32.📏 Voltmeter or ammeter: which one is joined in series? (a) ammeter (b) voltmeter
33. 33.📏 Which unit measures power? (a) watt (W) (b) ohm (Ω) (c) ampere (A) (d) volt (V)
34. 34.📏 How many kilo-ohms (kΩ) is 3900 Ω? =
35. 35.📏 How many milliamperes (mA) is 2.4 A?
36. 36.📏 Which unit measures voltage? (a) ohm (Ω) (b) watt (W) (c) ampere (A) (d) volt (V)
37. 37.📏 How many milliamperes (mA) is 0.77 A?
38. 38.Which of these is measured in volts (V)? (a) the flow of charge (b) energy used each second (c) the push of a cell (d) how much a part resists
39. 39.True or false: how much a part resists is measured in ohms (Ω). (a) True (b) False
40. 40.Which of these is measured in amperes (A)? (a) energy used each second (b) how much a part resists (c) current (d) the push of a cell

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