Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 764 · 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 amperes (A) is 850 mA? =
2. 2.📏 In the water-pipe picture of a circuit, voltage is like … (a) the pipe colour (b) the water tank lid (c) the tap handle (d) the water pressure
3. 3.📏 Voltmeter or ammeter: which one measures voltage? (a) ammeter (b) voltmeter
4. 4.📏 How many watts (W) is 1 kW?
5. 5.📏 How many ohms (Ω) is 0.2 kΩ?
6. 6.Which of these is measured in watts (W)? (a) current (b) voltage (c) power (d) the push of a cell
7. 7.True or false: the voltmeter measures current. (a) False (b) True
8. 8.📏 Voltmeter or ammeter: which one is joined across a part? (a) ammeter (b) voltmeter
9. 9.True or false: energy used each second is measured in watts (W). (a) True (b) False
10. 10.📏 Which unit measures how much a part resists? (a) ohm (Ω) (b) volt (V) (c) watt (W) (d) ampere (A)
11. 11.Which of these is measured in volts (V)? (a) resistance (b) voltage (c) the flow of charge (d) how much a part resists
12. 12.📏 How many milliamperes (mA) is 0.48 A?
13. 13.True or false: current is measured in amperes (A). (a) True (b) False
14. 14.Which of these is measured in amperes (A)? (a) how much a part resists (b) the flow of charge (c) the push of a cell (d) power
15. 15.📏 Which unit measures current? (a) watt (W) (b) volt (V) (c) ohm (Ω) (d) ampere (A)
16. 16.📏 How many kilo-ohms (kΩ) is 6100 Ω? =
17. 17.📏 How many watts (W) is 0.7 kW?
18. 18.Which of these is measured in watts (W)? (a) current (b) energy used each second (c) resistance (d) voltage
19. 19.📏 In the water-pipe picture of a circuit, current is like … (a) the water pressure (b) the pipe colour (c) a narrow pipe (d) the flow of water
20. 20.📏 How many ohms (Ω) is 8 kΩ?
21. 21.📏 How many watts (W) is 0.3 kW?
22. 22.True or false: resistance is measured in watts (W). (a) True (b) False
23. 23.True or false: the ammeter measures voltage. (a) False (b) True
24. 24.Which of these is measured in volts (V)? (a) current (b) energy used each second (c) the push of a cell (d) the flow of charge
25. 25.📏 How many amperes (A) is 630 mA? =
26. 26.📏 How many amperes (A) is 1320 mA? =
27. 27.📏 Which unit measures voltage? (a) ampere (A) (b) ohm (Ω) (c) watt (W) (d) volt (V)
28. 28.📏 How many kilowatts (kW) is 550 W? =
29. 29.True or false: the voltmeter is joined across a part. (a) False (b) True
30. 30.📏 Which unit measures the flow of charge? (a) ohm (Ω) (b) watt (W) (c) ampere (A) (d) volt (V)
31. 31.📏 In the water-pipe picture of a circuit, resistance is like … (a) a bigger tank (b) the water pressure (c) the flow of water (d) a narrow pipe
32. 32.📏 How many amperes (A) is 2150 mA? =
33. 33.📏 Voltmeter or ammeter: which one measures current? (a) ammeter (b) voltmeter
34. 34.True or false: how much a part resists is measured in amperes (A). (a) True (b) False
35. 35.True or false: the ammeter is joined in series. (a) True (b) False
36. 36.True or false: the voltmeter measures voltage. (a) False (b) True
37. 37.📏 How many kilo-ohms (kΩ) is 8300 Ω? =
38. 38.True or false: power is measured in watts (W). (a) False (b) True
39. 39.📏 Voltmeter or ammeter: which one is joined in series? (a) ammeter (b) voltmeter
40. 40.True or false: current is measured in watts (W). (a) False (b) True

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