Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 582 · 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 resistance? (a) volt (V) (b) ampere (A) (c) ohm (Ω) (d) watt (W)
2. 2.📏 In the water-pipe picture of a circuit, resistance is like … (a) a bigger tank (b) the flow of water (c) a narrow pipe (d) the water pressure
3. 3.📏 Which unit measures how much a part resists? (a) ohm (Ω) (b) ampere (A) (c) watt (W) (d) volt (V)
4. 4.📏 How many kilo-ohms (kΩ) is 4000 Ω? =
5. 5.Which of these is measured in volts (V)? (a) how much a part resists (b) power (c) resistance (d) voltage
6. 6.True or false: voltage is measured in volts (V). (a) True (b) False
7. 7.📏 Which unit measures voltage? (a) ampere (A) (b) ohm (Ω) (c) volt (V) (d) watt (W)
8. 8.True or false: how much a part resists is measured in watts (W). (a) True (b) False
9. 9.True or false: the ammeter is joined across a part. (a) True (b) False
10. 10.📏 How many amperes (A) is 1770 mA? =
11. 11.Which of these is measured in amperes (A)? (a) the push of a cell (b) the flow of charge (c) energy used each second (d) voltage
12. 12.True or false: energy used each second is measured in ohms (Ω). (a) True (b) False
13. 13.📏 Voltmeter or ammeter: which one measures voltage? (a) ammeter (b) voltmeter
14. 14.📏 How many ohms (Ω) is 7 kΩ?
15. 15.True or false: the push of a cell is measured in volts (V). (a) False (b) True
16. 16.True or false: the ammeter is joined in series. (a) False (b) True
17. 17.📏 How many kilowatts (kW) is 3550 W? =
18. 18.Which of these is measured in watts (W)? (a) how much a part resists (b) the flow of charge (c) energy used each second (d) voltage
19. 19.📏 How many milliamperes (mA) make 1 ampere? (a) 10 (b) 100 (c) 1000 (d) 60
20. 20.True or false: current is measured in amperes (A). (a) False (b) True
21. 21.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 10 (b) 100 (c) 1024 (d) 1000
22. 22.True or false: the ammeter measures current. (a) False (b) True
23. 23.📏 How many kilowatts (kW) is 3700 W? =
24. 24.Which of these is measured in ohms (Ω)? (a) energy used each second (b) how much a part resists (c) the flow of charge (d) current
25. 25.📏 How many watts (W) is 1.6 kW?
26. 26.📏 How many watts (W) is 3.9 kW?
27. 27.📏 How many watts (W) is 2.4 kW?
28. 28.📏 How many kilo-ohms (kΩ) is 100 Ω? =
29. 29.True or false: power is measured in amperes (A). (a) True (b) False
30. 30.True or false: the voltmeter measures current. (a) True (b) False
31. 31.Which of these is measured in watts (W)? (a) the push of a cell (b) current (c) power (d) voltage
32. 32.📏 In the water-pipe picture of a circuit, voltage is like … (a) the pipe colour (b) the water tank lid (c) the water pressure (d) the tap handle
33. 33.True or false: resistance is measured in volts (V). (a) False (b) True
34. 34.📏 How many ohms (Ω) is 0.1 kΩ?
35. 35.📏 How many milliamperes (mA) is 0.42 A?
36. 36.📏 How many milliamperes (mA) is 1.5 A?
37. 37.📏 Voltmeter or ammeter: which one is joined across a part? (a) ammeter (b) voltmeter
38. 38.📏 Voltmeter or ammeter: which one measures current? (a) ammeter (b) voltmeter
39. 39.📏 How many milliamperes (mA) is 1.76 A?
40. 40.True or false: the voltmeter is joined in series. (a) False (b) True

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