Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 266 · 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.Which of these is measured in watts (W)? (a) power (b) the push of a cell (c) the flow of charge (d) voltage
3. 3.📏 How many kilowatts (kW) is 650 W? =
4. 4.📏 Which unit measures the flow of charge? (a) volt (V) (b) ampere (A) (c) watt (W) (d) ohm (Ω)
5. 5.True or false: current is measured in volts (V). (a) True (b) False
6. 6.📏 Which unit measures power? (a) volt (V) (b) ohm (Ω) (c) ampere (A) (d) watt (W)
7. 7.True or false: how much a part resists is measured in amperes (A). (a) True (b) False
8. 8.Which of these is measured in ohms (Ω)? (a) voltage (b) resistance (c) the push of a cell (d) current
9. 9.True or false: power is measured in watts (W). (a) True (b) False
10. 10.📏 Voltmeter or ammeter: which one is joined across a part? (a) ammeter (b) voltmeter
11. 11.True or false: the push of a cell is measured in volts (V). (a) False (b) True
12. 12.📏 How many watts (W) is 3.4 kW?
13. 13.📏 Which unit measures voltage? (a) ampere (A) (b) watt (W) (c) volt (V) (d) ohm (Ω)
14. 14.📏 Which unit measures the push of a cell? (a) volt (V) (b) ampere (A) (c) watt (W) (d) ohm (Ω)
15. 15.True or false: resistance is measured in watts (W). (a) True (b) False
16. 16.True or false: the ammeter measures voltage. (a) False (b) True
17. 17.📏 Voltmeter or ammeter: which one measures current? (a) ammeter (b) voltmeter
18. 18.📏 How many milliamperes (mA) is 1.58 A?
19. 19.Which of these is measured in watts (W)? (a) current (b) resistance (c) how much a part resists (d) energy used each second
20. 20.📏 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
21. 21.📏 How many kilo-ohms (kΩ) is 8800 Ω? =
22. 22.📏 Which unit measures energy used each second? (a) ampere (A) (b) watt (W) (c) ohm (Ω) (d) volt (V)
23. 23.📏 How many milliamperes (mA) is 2.86 A?
24. 24.True or false: the voltmeter is joined across a part. (a) True (b) False
25. 25.📏 Which unit measures current? (a) ampere (A) (b) watt (W) (c) ohm (Ω) (d) volt (V)
26. 26.Which of these is measured in amperes (A)? (a) resistance (b) the push of a cell (c) the flow of charge (d) power
27. 27.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 100 (b) 1000 (c) 10 (d) 1024
28. 28.📏 Voltmeter or ammeter: which one is joined in series? (a) voltmeter (b) ammeter
29. 29.📏 How many ohms (Ω) is 7.4 kΩ?
30. 30.Which of these is measured in volts (V)? (a) power (b) resistance (c) energy used each second (d) the push of a cell
31. 31.📏 How many kilo-ohms (kΩ) is 8000 Ω? =
32. 32.True or false: the ammeter measures current. (a) False (b) True
33. 33.True or false: resistance is measured in amperes (A). (a) False (b) True
34. 34.True or false: energy used each second is measured in volts (V). (a) False (b) True
35. 35.📏 In the water-pipe picture of a circuit, voltage is like … (a) the tap handle (b) the pipe colour (c) the water pressure (d) the water tank lid
36. 36.📏 Which unit measures how much a part resists? (a) volt (V) (b) watt (W) (c) ampere (A) (d) ohm (Ω)
37. 37.📏 How many kilowatts (kW) is 300 W? =
38. 38.📏 How many milliamperes (mA) is 2.42 A?
39. 39.True or false: resistance is measured in ohms (Ω). (a) True (b) False
40. 40.True or false: resistance is measured in volts (V). (a) False (b) True

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