Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 472 · 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) 100 (b) 10 (c) 1024 (d) 1000
2. 2.True or false: the voltmeter measures voltage. (a) True (b) False
3. 3.📏 Voltmeter or ammeter: which one measures current? (a) ammeter (b) voltmeter
4. 4.📏 Which unit measures the flow of charge? (a) ohm (Ω) (b) watt (W) (c) ampere (A) (d) volt (V)
5. 5.📏 In the water-pipe picture of a circuit, current is like … (a) the water pressure (b) the flow of water (c) the pipe colour (d) a narrow pipe
6. 6.True or false: the push of a cell is measured in ohms (Ω). (a) False (b) True
7. 7.📏 Voltmeter or ammeter: which one is joined across a part? (a) ammeter (b) voltmeter
8. 8.True or false: energy used each second is measured in amperes (A). (a) True (b) False
9. 9.True or false: the ammeter measures voltage. (a) False (b) True
10. 10.📏 How many milliamperes (mA) is 1.27 A?
11. 11.True or false: current is measured in watts (W). (a) False (b) True
12. 12.Which of these is measured in amperes (A)? (a) energy used each second (b) current (c) power (d) resistance
13. 13.Which of these is measured in volts (V)? (a) current (b) the push of a cell (c) resistance (d) energy used each second
14. 14.True or false: the ammeter is joined across a part. (a) True (b) False
15. 15.Which of these is measured in watts (W)? (a) voltage (b) energy used each second (c) the flow of charge (d) resistance
16. 16.True or false: power is measured in watts (W). (a) False (b) True
17. 17.📏 Voltmeter or ammeter: which one is joined in series? (a) ammeter (b) voltmeter
18. 18.📏 How many ohms (Ω) is 7 kΩ?
19. 19.📏 Voltmeter or ammeter: which one measures voltage? (a) voltmeter (b) ammeter
20. 20.📏 How many kilowatts (kW) is 800 W? =
21. 21.📏 How many kilowatts (kW) is 3950 W? =
22. 22.📏 How many amperes (A) is 2190 mA? =
23. 23.📏 How many kilowatts (kW) is 2350 W? =
24. 24.📏 Which unit measures voltage? (a) volt (V) (b) watt (W) (c) ampere (A) (d) ohm (Ω)
25. 25.📏 Which unit measures how much a part resists? (a) watt (W) (b) volt (V) (c) ohm (Ω) (d) ampere (A)
26. 26.📏 How many milliamperes (mA) is 2.28 A?
27. 27.Which of these is measured in volts (V)? (a) the flow of charge (b) current (c) how much a part resists (d) voltage
28. 28.Which of these is measured in amperes (A)? (a) energy used each second (b) voltage (c) power (d) the flow of charge
29. 29.📏 Which unit measures energy used each second? (a) ampere (A) (b) volt (V) (c) watt (W) (d) ohm (Ω)
30. 30.True or false: the ammeter is joined in series. (a) False (b) True
31. 31.Which of these is measured in ohms (Ω)? (a) the push of a cell (b) the flow of charge (c) power (d) how much a part resists
32. 32.True or false: the voltmeter is joined in series. (a) True (b) False
33. 33.📏 Which unit measures power? (a) ohm (Ω) (b) watt (W) (c) ampere (A) (d) volt (V)
34. 34.True or false: voltage is measured in ohms (Ω). (a) False (b) True
35. 35.True or false: resistance is measured in ohms (Ω). (a) False (b) True
36. 36.📏 How many kilo-ohms (kΩ) is 10000 Ω? =
37. 37.📏 How many milliamperes (mA) make 1 ampere? (a) 1000 (b) 100 (c) 60 (d) 10
38. 38.📏 In the water-pipe picture of a circuit, voltage is like … (a) the water pressure (b) the pipe colour (c) the water tank lid (d) the tap handle
39. 39.True or false: how much a part resists is measured in ohms (Ω). (a) True (b) False
40. 40.📏 How many amperes (A) is 940 mA? =

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