Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 546 · 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: power is measured in volts (V). (a) False (b) True
2. 2.True or false: the voltmeter measures current. (a) False (b) True
3. 3.📏 In the water-pipe picture of a circuit, voltage is like … (a) the water pressure (b) the water tank lid (c) the pipe colour (d) the tap handle
4. 4.📏 How many kilo-ohms (kΩ) is 3000 Ω? =
5. 5.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 1024 (b) 10 (c) 1000 (d) 100
6. 6.True or false: voltage is measured in volts (V). (a) True (b) False
7. 7.True or false: the flow of charge is measured in amperes (A). (a) True (b) False
8. 8.📏 How many amperes (A) is 2490 mA? =
9. 9.📏 How many watts (W) is 3.2 kW?
10. 10.📏 How many kilo-ohms (kΩ) is 600 Ω? =
11. 11.📏 In the water-pipe picture of a circuit, current is like … (a) the pipe colour (b) the water pressure (c) the flow of water (d) a narrow pipe
12. 12.📏 How many watts (W) is 2.9 kW?
13. 13.True or false: current is measured in amperes (A). (a) False (b) True
14. 14.True or false: the push of a cell is measured in ohms (Ω). (a) False (b) True
15. 15.📏 How many amperes (A) is 900 mA? =
16. 16.📏 Which unit measures power? (a) ohm (Ω) (b) volt (V) (c) watt (W) (d) ampere (A)
17. 17.📏 Which unit measures energy used each second? (a) volt (V) (b) ohm (Ω) (c) watt (W) (d) ampere (A)
18. 18.Which of these is measured in volts (V)? (a) current (b) the flow of charge (c) voltage (d) power
19. 19.Which of these is measured in amperes (A)? (a) voltage (b) how much a part resists (c) current (d) energy used each second
20. 20.📏 Which unit measures the push of a cell? (a) ohm (Ω) (b) watt (W) (c) volt (V) (d) ampere (A)
21. 21.📏 How many kilowatts (kW) is 200 W? =
22. 22.📏 How many kilo-ohms (kΩ) is 7700 Ω? =
23. 23.📏 How many amperes (A) is 1820 mA? =
24. 24.True or false: energy used each second is measured in watts (W). (a) True (b) False
25. 25.True or false: power is measured in watts (W). (a) False (b) True
26. 26.True or false: the ammeter is joined across a part. (a) True (b) False
27. 27.Which of these is measured in amperes (A)? (a) the push of a cell (b) how much a part resists (c) the flow of charge (d) voltage
28. 28.📏 How many amperes (A) is 1510 mA? =
29. 29.📏 How many milliamperes (mA) make 1 ampere? (a) 1000 (b) 60 (c) 100 (d) 10
30. 30.Which of these is measured in ohms (Ω)? (a) resistance (b) power (c) voltage (d) current
31. 31.📏 How many kilowatts (kW) is 1150 W? =
32. 32.Which of these is measured in watts (W)? (a) power (b) voltage (c) the flow of charge (d) current
33. 33.True or false: the ammeter measures voltage. (a) True (b) False
34. 34.📏 How many kilo-ohms (kΩ) is 700 Ω? =
35. 35.📏 Voltmeter or ammeter: which one is joined in series? (a) ammeter (b) voltmeter
36. 36.📏 How many watts (W) is 0.2 kW?
37. 37.True or false: resistance is measured in watts (W). (a) True (b) False
38. 38.📏 Voltmeter or ammeter: which one measures voltage? (a) voltmeter (b) ammeter
39. 39.📏 How many kilowatts (kW) is 3500 W? =
40. 40.True or false: how much a part resists is measured in ohms (Ω). (a) False (b) True

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