Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 241 · 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 is joined in series? (a) ammeter (b) voltmeter
2. 2.Which of these is measured in volts (V)? (a) current (b) power (c) how much a part resists (d) voltage
3. 3.📏 In the water-pipe picture of a circuit, current is like … (a) the pipe colour (b) a narrow pipe (c) the water pressure (d) the flow of water
4. 4.True or false: energy used each second is measured in ohms (Ω). (a) True (b) False
5. 5.📏 How many watts (W) is 1.4 kW?
6. 6.📏 How many milliamperes (mA) is 1.67 A?
7. 7.Which of these is measured in amperes (A)? (a) the flow of charge (b) energy used each second (c) voltage (d) the push of a cell
8. 8.📏 How many milliamperes (mA) is 1.04 A?
9. 9.True or false: how much a part resists is measured in ohms (Ω). (a) False (b) True
10. 10.True or false: the flow of charge is measured in volts (V). (a) True (b) False
11. 11.📏 How many amperes (A) is 2610 mA? =
12. 12.📏 How many amperes (A) is 1810 mA? =
13. 13.📏 How many kilo-ohms (kΩ) is 9100 Ω? =
14. 14.📏 How many watts (W) is 4.1 kW?
15. 15.📏 Which unit measures resistance? (a) ampere (A) (b) watt (W) (c) volt (V) (d) ohm (Ω)
16. 16.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 1024 (b) 10 (c) 1000 (d) 100
17. 17.📏 Which unit measures current? (a) ohm (Ω) (b) volt (V) (c) ampere (A) (d) watt (W)
18. 18.📏 Voltmeter or ammeter: which one measures voltage? (a) voltmeter (b) ammeter
19. 19.📏 Which unit measures the push of a cell? (a) volt (V) (b) ohm (Ω) (c) watt (W) (d) ampere (A)
20. 20.True or false: voltage is measured in volts (V). (a) True (b) False
21. 21.📏 How many watts (W) is 3.6 kW?
22. 22.📏 Which unit measures how much a part resists? (a) watt (W) (b) volt (V) (c) ampere (A) (d) ohm (Ω)
23. 23.📏 Which unit measures the flow of charge? (a) ohm (Ω) (b) ampere (A) (c) watt (W) (d) volt (V)
24. 24.📏 How many milliamperes (mA) make 1 ampere? (a) 100 (b) 1000 (c) 60 (d) 10
25. 25.📏 In the water-pipe picture of a circuit, voltage is like … (a) the water pressure (b) the pipe colour (c) the water tank lid (d) the tap handle
26. 26.📏 How many ohms (Ω) is 4.5 kΩ?
27. 27.True or false: the voltmeter measures voltage. (a) False (b) True
28. 28.📏 In the water-pipe picture of a circuit, resistance is like … (a) the flow of water (b) a narrow pipe (c) a bigger tank (d) the water pressure
29. 29.📏 How many milliamperes (mA) is 1.91 A?
30. 30.True or false: the voltmeter is joined in series. (a) True (b) False
31. 31.📏 Which unit measures voltage? (a) volt (V) (b) ohm (Ω) (c) watt (W) (d) ampere (A)
32. 32.True or false: the ammeter is joined in series. (a) False (b) True
33. 33.True or false: the push of a cell is measured in watts (W). (a) False (b) True
34. 34.📏 How many milliamperes (mA) is 0.29 A?
35. 35.Which of these is measured in ohms (Ω)? (a) energy used each second (b) power (c) resistance (d) voltage
36. 36.True or false: power is measured in amperes (A). (a) False (b) True
37. 37.📏 Voltmeter or ammeter: which one is joined across a part? (a) ammeter (b) voltmeter
38. 38.📏 How many watts (W) is 4.5 kW?
39. 39.True or false: the ammeter is joined across a part. (a) False (b) True
40. 40.Which of these is measured in amperes (A)? (a) power (b) energy used each second (c) current (d) the push of a cell

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