Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 350 · 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 of these is measured in watts (W)? (a) the push of a cell (b) the flow of charge (c) voltage (d) power
2. 2.True or false: how much a part resists is measured in watts (W). (a) True (b) False
3. 3.Which of these is measured in amperes (A)? (a) how much a part resists (b) voltage (c) current (d) energy used each second
4. 4.📏 How many kilowatts (kW) is 1000 W? =
5. 5.📏 In the water-pipe picture of a circuit, resistance is like … (a) a narrow pipe (b) the water pressure (c) the flow of water (d) a bigger tank
6. 6.📏 How many amperes (A) is 1300 mA? =
7. 7.True or false: the push of a cell is measured in watts (W). (a) False (b) True
8. 8.📏 Which unit measures voltage? (a) ohm (Ω) (b) volt (V) (c) ampere (A) (d) watt (W)
9. 9.📏 How many amperes (A) is 2260 mA? =
10. 10.📏 How many milliamperes (mA) make 1 ampere? (a) 60 (b) 100 (c) 10 (d) 1000
11. 11.Which of these is measured in volts (V)? (a) resistance (b) the push of a cell (c) current (d) power
12. 12.Which of these is measured in ohms (Ω)? (a) how much a part resists (b) current (c) the flow of charge (d) power
13. 13.📏 How many amperes (A) is 1610 mA? =
14. 14.True or false: the ammeter is joined across a part. (a) True (b) False
15. 15.Which of these is measured in volts (V)? (a) the flow of charge (b) how much a part resists (c) voltage (d) energy used each second
16. 16.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 10 (b) 1024 (c) 1000 (d) 100
17. 17.📏 In the water-pipe picture of a circuit, current is like … (a) the flow of water (b) a narrow pipe (c) the water pressure (d) the pipe colour
18. 18.📏 How many kilo-ohms (kΩ) is 5600 Ω? =
19. 19.Which of these is measured in watts (W)? (a) energy used each second (b) the push of a cell (c) resistance (d) current
20. 20.True or false: how much a part resists is measured in ohms (Ω). (a) True (b) False
21. 21.True or false: the flow of charge is measured in ohms (Ω). (a) False (b) True
22. 22.📏 Voltmeter or ammeter: which one measures current? (a) voltmeter (b) ammeter
23. 23.True or false: the ammeter measures voltage. (a) True (b) False
24. 24.True or false: power is measured in watts (W). (a) False (b) True
25. 25.📏 Which unit measures current? (a) ampere (A) (b) ohm (Ω) (c) watt (W) (d) volt (V)
26. 26.📏 How many ohms (Ω) is 4.2 kΩ?
27. 27.True or false: current is measured in amperes (A). (a) True (b) False
28. 28.📏 Which unit measures the push of a cell? (a) volt (V) (b) ohm (Ω) (c) ampere (A) (d) watt (W)
29. 29.True or false: power is measured in amperes (A). (a) False (b) True
30. 30.📏 Which unit measures how much a part resists? (a) ampere (A) (b) volt (V) (c) ohm (Ω) (d) watt (W)
31. 31.📏 Voltmeter or ammeter: which one is joined in series? (a) ammeter (b) voltmeter
32. 32.📏 How many ohms (Ω) is 8.1 kΩ?
33. 33.📏 How many milliamperes (mA) is 0.26 A?
34. 34.📏 How many watts (W) is 2.6 kW?
35. 35.📏 How many amperes (A) is 2680 mA? =
36. 36.📏 In the water-pipe picture of a circuit, voltage is like … (a) the water pressure (b) the tap handle (c) the water tank lid (d) the pipe colour
37. 37.📏 Which unit measures the flow of charge? (a) watt (W) (b) volt (V) (c) ampere (A) (d) ohm (Ω)
38. 38.Which of these is measured in ohms (Ω)? (a) power (b) resistance (c) the push of a cell (d) energy used each second
39. 39.True or false: the voltmeter is joined across a part. (a) True (b) False
40. 40.📏 How many kilowatts (kW) is 1800 W? =

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