Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 901 · 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: power is measured in watts (W). (a) False (b) True
2. 2.📏 Voltmeter or ammeter: which one measures voltage? (a) voltmeter (b) ammeter
3. 3.True or false: the flow of charge is measured in ohms (Ω). (a) False (b) True
4. 4.True or false: the ammeter is joined across a part. (a) False (b) True
5. 5.📏 Which unit measures power? (a) ampere (A) (b) ohm (Ω) (c) volt (V) (d) watt (W)
6. 6.📏 How many kilowatts (kW) is 2500 W? =
7. 7.True or false: the ammeter measures voltage. (a) True (b) False
8. 8.Which of these is measured in ohms (Ω)? (a) how much a part resists (b) power (c) voltage (d) energy used each second
9. 9.📏 How many kilo-ohms (kΩ) is 1000 Ω? =
10. 10.True or false: the push of a cell is measured in volts (V). (a) False (b) True
11. 11.📏 How many watts (W) is 3.6 kW?
12. 12.📏 Which unit measures how much a part resists? (a) watt (W) (b) ampere (A) (c) ohm (Ω) (d) volt (V)
13. 13.Which of these is measured in amperes (A)? (a) how much a part resists (b) power (c) the flow of charge (d) voltage
14. 14.True or false: the ammeter is joined in series. (a) False (b) True
15. 15.Which of these is measured in volts (V)? (a) resistance (b) the push of a cell (c) the flow of charge (d) power
16. 16.True or false: the push of a cell is measured in amperes (A). (a) False (b) True
17. 17.📏 Voltmeter or ammeter: which one is joined in series? (a) voltmeter (b) ammeter
18. 18.True or false: resistance is measured in watts (W). (a) False (b) True
19. 19.📏 How many amperes (A) is 960 mA? =
20. 20.Which of these is measured in volts (V)? (a) energy used each second (b) power (c) voltage (d) resistance
21. 21.📏 Which unit measures energy used each second? (a) watt (W) (b) volt (V) (c) ohm (Ω) (d) ampere (A)
22. 22.📏 Which unit measures the push of a cell? (a) watt (W) (b) ohm (Ω) (c) ampere (A) (d) volt (V)
23. 23.📏 Which unit measures resistance? (a) volt (V) (b) watt (W) (c) ampere (A) (d) ohm (Ω)
24. 24.📏 How many kilowatts (kW) is 4600 W? =
25. 25.📏 In the water-pipe picture of a circuit, current is like … (a) the pipe colour (b) the water pressure (c) a narrow pipe (d) the flow of water
26. 26.📏 In the water-pipe picture of a circuit, voltage is like … (a) the water pressure (b) the pipe colour (c) the tap handle (d) the water tank lid
27. 27.📏 Which unit measures voltage? (a) ampere (A) (b) volt (V) (c) watt (W) (d) ohm (Ω)
28. 28.True or false: the voltmeter measures current. (a) True (b) False
29. 29.📏 Which unit measures current? (a) ohm (Ω) (b) volt (V) (c) ampere (A) (d) watt (W)
30. 30.True or false: the ammeter measures current. (a) True (b) False
31. 31.📏 How many watts (W) is 0.5 kW?
32. 32.True or false: power is measured in ohms (Ω). (a) True (b) False
33. 33.True or false: the voltmeter measures voltage. (a) False (b) True
34. 34.📏 How many kilo-ohms (kΩ) is 8400 Ω? =
35. 35.📏 How many milliamperes (mA) is 2.32 A?
36. 36.Which of these is measured in watts (W)? (a) the push of a cell (b) voltage (c) the flow of charge (d) power
37. 37.📏 Voltmeter or ammeter: which one is joined across a part? (a) voltmeter (b) ammeter
38. 38.📏 How many milliamperes (mA) make 1 ampere? (a) 60 (b) 10 (c) 100 (d) 1000
39. 39.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 10 (b) 1000 (c) 100 (d) 1024
40. 40.True or false: current is measured in ohms (Ω). (a) False (b) True

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