Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 679 · 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 energy used each second? (a) volt (V) (b) watt (W) (c) ampere (A) (d) ohm (Ω)
2. 2.📏 How many amperes (A) is 2180 mA? =
3. 3.True or false: energy used each second is measured in watts (W). (a) True (b) False
4. 4.📏 How many amperes (A) is 660 mA? =
5. 5.True or false: the flow of charge is measured in amperes (A). (a) True (b) False
6. 6.📏 How many ohms (Ω) is 7.1 kΩ?
7. 7.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 10 (b) 100 (c) 1000 (d) 1024
8. 8.📏 Which unit measures the flow of charge? (a) volt (V) (b) ampere (A) (c) watt (W) (d) ohm (Ω)
9. 9.📏 Which unit measures how much a part resists? (a) volt (V) (b) watt (W) (c) ohm (Ω) (d) ampere (A)
10. 10.📏 How many amperes (A) is 1610 mA? =
11. 11.📏 Voltmeter or ammeter: which one is joined in series? (a) voltmeter (b) ammeter
12. 12.Which of these is measured in amperes (A)? (a) power (b) the push of a cell (c) how much a part resists (d) the flow of charge
13. 13.True or false: the push of a cell is measured in ohms (Ω). (a) True (b) False
14. 14.📏 How many milliamperes (mA) make 1 ampere? (a) 1000 (b) 10 (c) 60 (d) 100
15. 15.True or false: the voltmeter is joined in series. (a) True (b) False
16. 16.📏 Voltmeter or ammeter: which one measures voltage? (a) voltmeter (b) ammeter
17. 17.📏 How many ohms (Ω) is 7.5 kΩ?
18. 18.📏 How many kilo-ohms (kΩ) is 6200 Ω? =
19. 19.True or false: how much a part resists is measured in amperes (A). (a) False (b) True
20. 20.📏 In the water-pipe picture of a circuit, current is like … (a) the flow of water (b) the pipe colour (c) the water pressure (d) a narrow pipe
21. 21.📏 How many milliamperes (mA) is 0.87 A?
22. 22.📏 How many kilo-ohms (kΩ) is 3100 Ω? =
23. 23.📏 How many kilowatts (kW) is 2300 W? =
24. 24.True or false: the voltmeter is joined across a part. (a) False (b) True
25. 25.📏 In the water-pipe picture of a circuit, voltage is like … (a) the water tank lid (b) the pipe colour (c) the water pressure (d) the tap handle
26. 26.📏 Which unit measures voltage? (a) ohm (Ω) (b) ampere (A) (c) volt (V) (d) watt (W)
27. 27.📏 Voltmeter or ammeter: which one measures current? (a) voltmeter (b) ammeter
28. 28.Which of these is measured in watts (W)? (a) power (b) how much a part resists (c) the push of a cell (d) voltage
29. 29.True or false: how much a part resists is measured in ohms (Ω). (a) False (b) True
30. 30.True or false: the ammeter measures voltage. (a) True (b) False
31. 31.True or false: current is measured in watts (W). (a) False (b) True
32. 32.True or false: the ammeter is joined across a part. (a) True (b) False
33. 33.📏 Which unit measures the push of a cell? (a) ohm (Ω) (b) volt (V) (c) watt (W) (d) ampere (A)
34. 34.Which of these is measured in volts (V)? (a) the push of a cell (b) power (c) the flow of charge (d) how much a part resists
35. 35.Which of these is measured in ohms (Ω)? (a) voltage (b) current (c) the push of a cell (d) how much a part resists
36. 36.📏 How many kilowatts (kW) is 4300 W? =
37. 37.📏 How many milliamperes (mA) is 0.01 A?
38. 38.📏 How many kilo-ohms (kΩ) is 2300 Ω? =
39. 39.📏 Voltmeter or ammeter: which one is joined across a part? (a) ammeter (b) voltmeter
40. 40.📏 In the water-pipe picture of a circuit, resistance is like … (a) a narrow pipe (b) the flow of water (c) the water pressure (d) a bigger tank

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