Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 566 · 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 210 mA? =
2. 2.📏 In the water-pipe picture of a circuit, current is like … (a) the water pressure (b) a narrow pipe (c) the flow of water (d) the pipe colour
3. 3.📏 How many milliamperes (mA) make 1 ampere? (a) 60 (b) 1000 (c) 100 (d) 10
4. 4.Which of these is measured in amperes (A)? (a) the push of a cell (b) energy used each second (c) the flow of charge (d) how much a part resists
5. 5.True or false: the ammeter is joined across a part. (a) False (b) True
6. 6.Which of these is measured in ohms (Ω)? (a) power (b) the flow of charge (c) current (d) resistance
7. 7.📏 How many watts (W) is 1 kW?
8. 8.Which of these is measured in volts (V)? (a) the push of a cell (b) energy used each second (c) resistance (d) the flow of charge
9. 9.📏 Which unit measures power? (a) ohm (Ω) (b) volt (V) (c) watt (W) (d) ampere (A)
10. 10.📏 Voltmeter or ammeter: which one is joined across a part? (a) ammeter (b) voltmeter
11. 11.True or false: the push of a cell is measured in ohms (Ω). (a) True (b) False
12. 12.📏 Which unit measures current? (a) ampere (A) (b) volt (V) (c) watt (W) (d) ohm (Ω)
13. 13.True or false: power is measured in amperes (A). (a) True (b) False
14. 14.Which of these is measured in amperes (A)? (a) energy used each second (b) current (c) resistance (d) how much a part resists
15. 15.📏 How many milliamperes (mA) is 0.73 A?
16. 16.True or false: the voltmeter is joined across a part. (a) False (b) True
17. 17.📏 How many kilo-ohms (kΩ) is 6400 Ω? =
18. 18.Which of these is measured in volts (V)? (a) how much a part resists (b) resistance (c) voltage (d) current
19. 19.True or false: energy used each second is measured in watts (W). (a) False (b) True
20. 20.📏 How many watts (W) is 0.3 kW?
21. 21.📏 How many ohms (Ω) is 7.2 kΩ?
22. 22.True or false: energy used each second is measured in ohms (Ω). (a) True (b) False
23. 23.True or false: how much a part resists is measured in ohms (Ω). (a) True (b) False
24. 24.📏 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
25. 25.True or false: energy used each second is measured in volts (V). (a) False (b) True
26. 26.📏 How many amperes (A) is 940 mA? =
27. 27.📏 How many kilowatts (kW) is 850 W? =
28. 28.True or false: the voltmeter is joined in series. (a) False (b) True
29. 29.📏 How many kilowatts (kW) is 2400 W? =
30. 30.True or false: voltage is measured in amperes (A). (a) False (b) True
31. 31.True or false: power is measured in watts (W). (a) False (b) True
32. 32.📏 Voltmeter or ammeter: which one measures voltage? (a) ammeter (b) voltmeter
33. 33.📏 How many kilowatts (kW) is 900 W? =
34. 34.📏 Which unit measures resistance? (a) ampere (A) (b) volt (V) (c) ohm (Ω) (d) watt (W)
35. 35.📏 How many kilo-ohms (kΩ) is 500 Ω? =
36. 36.True or false: voltage is measured in volts (V). (a) True (b) False
37. 37.📏 Voltmeter or ammeter: which one is joined in series? (a) voltmeter (b) ammeter
38. 38.📏 Voltmeter or ammeter: which one measures current? (a) voltmeter (b) ammeter
39. 39.True or false: the push of a cell is measured in amperes (A). (a) True (b) False
40. 40.📏 How many kilo-ohms (kΩ) is 8000 Ω? =

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