Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 734 · 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.True or false: the voltmeter measures voltage. (a) False (b) True
2. 2.True or false: resistance is measured in ohms (Ω). (a) False (b) True
3. 3.Which of these is measured in amperes (A)? (a) how much a part resists (b) current (c) resistance (d) energy used each second
4. 4.True or false: voltage is measured in volts (V). (a) True (b) False
5. 5.📏 In the water-pipe picture of a circuit, resistance is like … (a) the water pressure (b) a bigger tank (c) a narrow pipe (d) the flow of water
6. 6.📏 How many milliamperes (mA) is 0.92 A?
7. 7.📏 How many watts (W) is 0.8 kW?
8. 8.📏 Voltmeter or ammeter: which one is joined across a part? (a) voltmeter (b) ammeter
9. 9.📏 In the water-pipe picture of a circuit, voltage is like … (a) the water tank lid (b) the tap handle (c) the pipe colour (d) the water pressure
10. 10.📏 How many milliamperes (mA) is 1.03 A?
11. 11.True or false: current is measured in volts (V). (a) True (b) False
12. 12.📏 Voltmeter or ammeter: which one is joined in series? (a) voltmeter (b) ammeter
13. 13.📏 In the water-pipe picture of a circuit, current is like … (a) the water pressure (b) a narrow pipe (c) the flow of water (d) the pipe colour
14. 14.True or false: current is measured in ohms (Ω). (a) True (b) False
15. 15.📏 How many amperes (A) is 2070 mA? =
16. 16.Which of these is measured in volts (V)? (a) the flow of charge (b) how much a part resists (c) voltage (d) resistance
17. 17.Which of these is measured in ohms (Ω)? (a) current (b) power (c) how much a part resists (d) the flow of charge
18. 18.📏 Which unit measures power? (a) watt (W) (b) ohm (Ω) (c) volt (V) (d) ampere (A)
19. 19.📏 How many milliamperes (mA) make 1 ampere? (a) 100 (b) 10 (c) 60 (d) 1000
20. 20.True or false: energy used each second is measured in ohms (Ω). (a) True (b) False
21. 21.Which of these is measured in volts (V)? (a) current (b) the push of a cell (c) energy used each second (d) the flow of charge
22. 22.True or false: how much a part resists is measured in volts (V). (a) False (b) True
23. 23.📏 Which unit measures how much a part resists? (a) volt (V) (b) ohm (Ω) (c) watt (W) (d) ampere (A)
24. 24.True or false: the voltmeter is joined in series. (a) False (b) True
25. 25.📏 Voltmeter or ammeter: which one measures current? (a) voltmeter (b) ammeter
26. 26.True or false: current is measured in amperes (A). (a) True (b) False
27. 27.📏 How many ohms (Ω) is 8.4 kΩ?
28. 28.📏 How many ohms (Ω) is 2.5 kΩ?
29. 29.📏 How many ohms (Ω) is 0.3 kΩ?
30. 30.True or false: the voltmeter is joined across a part. (a) True (b) False
31. 31.📏 How many ohms (Ω) is 1.3 kΩ?
32. 32.📏 How many kilowatts (kW) is 2900 W? =
33. 33.📏 How many kilo-ohms (kΩ) is 9600 Ω? =
34. 34.📏 Voltmeter or ammeter: which one measures voltage? (a) voltmeter (b) ammeter
35. 35.📏 Which unit measures energy used each second? (a) ohm (Ω) (b) volt (V) (c) ampere (A) (d) watt (W)
36. 36.📏 How many kilo-ohms (kΩ) is 5400 Ω? =
37. 37.📏 Which unit measures current? (a) ohm (Ω) (b) watt (W) (c) volt (V) (d) ampere (A)
38. 38.📏 Which unit measures the flow of charge? (a) watt (W) (b) volt (V) (c) ampere (A) (d) ohm (Ω)
39. 39.Which of these is measured in watts (W)? (a) how much a part resists (b) power (c) the push of a cell (d) resistance
40. 40.True or false: the ammeter measures current. (a) False (b) True

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