Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 594 · 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.True or false: the voltmeter is joined in series. (a) False (b) True
2. 2.📏 How many amperes (A) is 2540 mA? =
3. 3.📏 Voltmeter or ammeter: which one measures current? (a) ammeter (b) voltmeter
4. 4.True or false: voltage is measured in volts (V). (a) True (b) False
5. 5.True or false: the push of a cell is measured in volts (V). (a) True (b) False
6. 6.📏 Which unit measures the flow of charge? (a) ohm (Ω) (b) volt (V) (c) ampere (A) (d) watt (W)
7. 7.📏 Which unit measures resistance? (a) watt (W) (b) ohm (Ω) (c) ampere (A) (d) volt (V)
8. 8.📏 Voltmeter or ammeter: which one is joined in series? (a) voltmeter (b) ammeter
9. 9.📏 Which unit measures energy used each second? (a) volt (V) (b) watt (W) (c) ohm (Ω) (d) ampere (A)
10. 10.📏 Voltmeter or ammeter: which one measures voltage? (a) voltmeter (b) ammeter
11. 11.📏 Which unit measures the push of a cell? (a) ampere (A) (b) ohm (Ω) (c) volt (V) (d) watt (W)
12. 12.📏 How many milliamperes (mA) make 1 ampere? (a) 1000 (b) 60 (c) 100 (d) 10
13. 13.📏 How many watts (W) is 4.3 kW?
14. 14.📏 Which unit measures power? (a) ohm (Ω) (b) volt (V) (c) ampere (A) (d) watt (W)
15. 15.📏 How many kilo-ohms (kΩ) is 3700 Ω? =
16. 16.📏 Which unit measures current? (a) ampere (A) (b) volt (V) (c) watt (W) (d) ohm (Ω)
17. 17.📏 In the water-pipe picture of a circuit, voltage is like … (a) the tap handle (b) the water tank lid (c) the water pressure (d) the pipe colour
18. 18.Which of these is measured in volts (V)? (a) power (b) how much a part resists (c) the push of a cell (d) the flow of charge
19. 19.📏 How many kilowatts (kW) is 4550 W? =
20. 20.📏 How many amperes (A) is 720 mA? =
21. 21.📏 How many ohms (Ω) is 2.1 kΩ?
22. 22.True or false: the ammeter is joined across a part. (a) False (b) True
23. 23.True or false: energy used each second is measured in volts (V). (a) False (b) True
24. 24.True or false: how much a part resists is measured in amperes (A). (a) False (b) True
25. 25.📏 Which unit measures how much a part resists? (a) watt (W) (b) ampere (A) (c) volt (V) (d) ohm (Ω)
26. 26.📏 In the water-pipe picture of a circuit, current is like … (a) a narrow pipe (b) the pipe colour (c) the water pressure (d) the flow of water
27. 27.True or false: the flow of charge is measured in watts (W). (a) False (b) True
28. 28.📏 Voltmeter or ammeter: which one is joined across a part? (a) ammeter (b) voltmeter
29. 29.Which of these is measured in ohms (Ω)? (a) the push of a cell (b) resistance (c) energy used each second (d) power
30. 30.True or false: the flow of charge is measured in amperes (A). (a) False (b) True
31. 31.Which of these is measured in ohms (Ω)? (a) how much a part resists (b) the push of a cell (c) power (d) energy used each second
32. 32.📏 How many ohms (Ω) is 8.1 kΩ?
33. 33.📏 In the water-pipe picture of a circuit, resistance is like … (a) a bigger tank (b) a narrow pipe (c) the water pressure (d) the flow of water
34. 34.📏 How many watts (W) is 0.9 kW?
35. 35.📏 How many kilo-ohms (kΩ) is 6000 Ω? =
36. 36.📏 How many milliamperes (mA) is 1.03 A?
37. 37.📏 How many kilowatts (kW) is 1600 W? =
38. 38.True or false: the push of a cell is measured in ohms (Ω). (a) False (b) True
39. 39.📏 How many watts (W) is 1.9 kW?
40. 40.Which of these is measured in amperes (A)? (a) how much a part resists (b) current (c) power (d) voltage

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