Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 904 · 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 across a part? (a) ammeter (b) voltmeter
2. 2.Which of these is measured in watts (W)? (a) voltage (b) how much a part resists (c) power (d) resistance
3. 3.📏 Voltmeter or ammeter: which one measures current? (a) ammeter (b) voltmeter
4. 4.True or false: the voltmeter is joined in series. (a) False (b) True
5. 5.📏 How many milliamperes (mA) is 1.1 A?
6. 6.📏 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
7. 7.📏 Which unit measures power? (a) ampere (A) (b) watt (W) (c) volt (V) (d) ohm (Ω)
8. 8.📏 How many kilo-ohms (kΩ) is 7900 Ω? =
9. 9.True or false: power is measured in watts (W). (a) False (b) True
10. 10.Which of these is measured in watts (W)? (a) how much a part resists (b) energy used each second (c) current (d) the flow of charge
11. 11.📏 How many ohms (Ω) is 0.2 kΩ?
12. 12.📏 How many kilowatts (kW) is 3950 W? =
13. 13.📏 Voltmeter or ammeter: which one measures voltage? (a) voltmeter (b) ammeter
14. 14.True or false: the push of a cell is measured in volts (V). (a) True (b) False
15. 15.📏 How many ohms (Ω) is 3.8 kΩ?
16. 16.📏 Which unit measures the push of a cell? (a) volt (V) (b) ampere (A) (c) ohm (Ω) (d) watt (W)
17. 17.True or false: the ammeter is joined across a part. (a) True (b) False
18. 18.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 1000 (b) 100 (c) 10 (d) 1024
19. 19.📏 How many milliamperes (mA) is 2.28 A?
20. 20.📏 In the water-pipe picture of a circuit, current is like … (a) a narrow pipe (b) the pipe colour (c) the flow of water (d) the water pressure
21. 21.True or false: the push of a cell is measured in watts (W). (a) True (b) False
22. 22.📏 In the water-pipe picture of a circuit, resistance is like … (a) a narrow pipe (b) a bigger tank (c) the flow of water (d) the water pressure
23. 23.📏 Which unit measures how much a part resists? (a) watt (W) (b) ampere (A) (c) volt (V) (d) ohm (Ω)
24. 24.True or false: the ammeter measures voltage. (a) True (b) False
25. 25.📏 Voltmeter or ammeter: which one is joined in series? (a) ammeter (b) voltmeter
26. 26.True or false: energy used each second is measured in watts (W). (a) True (b) False
27. 27.True or false: resistance is measured in ohms (Ω). (a) False (b) True
28. 28.📏 How many amperes (A) is 300 mA? =
29. 29.📏 How many ohms (Ω) is 4.3 kΩ?
30. 30.📏 Which unit measures voltage? (a) watt (W) (b) ohm (Ω) (c) ampere (A) (d) volt (V)
31. 31.📏 How many amperes (A) is 930 mA? =
32. 32.📏 How many milliamperes (mA) is 1.71 A?
33. 33.True or false: how much a part resists is measured in ohms (Ω). (a) True (b) False
34. 34.📏 How many kilo-ohms (kΩ) is 4100 Ω? =
35. 35.📏 How many amperes (A) is 670 mA? =
36. 36.📏 How many kilo-ohms (kΩ) is 9400 Ω? =
37. 37.True or false: the ammeter measures current. (a) False (b) True
38. 38.Which of these is measured in ohms (Ω)? (a) the push of a cell (b) how much a part resists (c) the flow of charge (d) power
39. 39.True or false: resistance is measured in volts (V). (a) False (b) True
40. 40.Which of these is measured in volts (V)? (a) how much a part resists (b) voltage (c) current (d) power

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