Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 322 · 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 (Ω) is 0.7 kΩ?
2. 2.True or false: the ammeter measures current. (a) True (b) False
3. 3.True or false: the ammeter is joined in series. (a) True (b) False
4. 4.📏 How many ohms (Ω) is 6.4 kΩ?
5. 5.📏 Which unit measures the flow of charge? (a) volt (V) (b) watt (W) (c) ohm (Ω) (d) ampere (A)
6. 6.📏 Which unit measures how much a part resists? (a) ohm (Ω) (b) volt (V) (c) watt (W) (d) ampere (A)
7. 7.📏 In the water-pipe picture of a circuit, voltage is like … (a) the tap handle (b) the water tank lid (c) the pipe colour (d) the water pressure
8. 8.True or false: the ammeter measures voltage. (a) False (b) True
9. 9.📏 How many kilowatts (kW) is 100 W? =
10. 10.📏 How many milliamperes (mA) is 1.79 A?
11. 11.True or false: energy used each second is measured in watts (W). (a) True (b) False
12. 12.True or false: the push of a cell is measured in volts (V). (a) True (b) False
13. 13.📏 How many milliamperes (mA) is 2.9 A?
14. 14.Which of these is measured in volts (V)? (a) power (b) the push of a cell (c) current (d) energy used each second
15. 15.Which of these is measured in ohms (Ω)? (a) voltage (b) the push of a cell (c) resistance (d) energy used each second
16. 16.Which of these is measured in amperes (A)? (a) voltage (b) energy used each second (c) current (d) how much a part resists
17. 17.📏 Which unit measures voltage? (a) volt (V) (b) watt (W) (c) ampere (A) (d) ohm (Ω)
18. 18.Which of these is measured in ohms (Ω)? (a) current (b) how much a part resists (c) the push of a cell (d) power
19. 19.📏 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
20. 20.True or false: energy used each second is measured in amperes (A). (a) False (b) True
21. 21.📏 How many kilowatts (kW) is 2450 W? =
22. 22.📏 How many milliamperes (mA) make 1 ampere? (a) 1000 (b) 60 (c) 100 (d) 10
23. 23.True or false: the ammeter is joined across a part. (a) False (b) True
24. 24.📏 Voltmeter or ammeter: which one measures voltage? (a) ammeter (b) voltmeter
25. 25.📏 In the water-pipe picture of a circuit, resistance is like … (a) the water pressure (b) a narrow pipe (c) a bigger tank (d) the flow of water
26. 26.📏 How many kilo-ohms (kΩ) is 8600 Ω? =
27. 27.📏 Which unit measures energy used each second? (a) ohm (Ω) (b) watt (W) (c) ampere (A) (d) volt (V)
28. 28.📏 Voltmeter or ammeter: which one is joined in series? (a) ammeter (b) voltmeter
29. 29.Which of these is measured in watts (W)? (a) how much a part resists (b) resistance (c) current (d) energy used each second
30. 30.True or false: the voltmeter is joined in series. (a) False (b) True
31. 31.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 1000 (b) 100 (c) 10 (d) 1024
32. 32.📏 How many amperes (A) is 1710 mA? =
33. 33.True or false: the voltmeter measures voltage. (a) False (b) True
34. 34.Which of these is measured in amperes (A)? (a) the flow of charge (b) resistance (c) the push of a cell (d) voltage
35. 35.True or false: the voltmeter is joined across a part. (a) True (b) False
36. 36.📏 How many kilowatts (kW) is 500 W? =
37. 37.📏 How many watts (W) is 1 kW?
38. 38.📏 Which unit measures power? (a) ohm (Ω) (b) volt (V) (c) watt (W) (d) ampere (A)
39. 39.📏 How many ohms (Ω) is 3.4 kΩ?
40. 40.📏 How many amperes (A) is 890 mA? =

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