Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 848 · 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.📏 In the water-pipe picture of a circuit, voltage is like … (a) the tap handle (b) the pipe colour (c) the water tank lid (d) the water pressure
2. 2.📏 Voltmeter or ammeter: which one measures voltage? (a) ammeter (b) voltmeter
3. 3.Which of these is measured in amperes (A)? (a) energy used each second (b) power (c) the push of a cell (d) the flow of charge
4. 4.📏 Voltmeter or ammeter: which one measures current? (a) voltmeter (b) ammeter
5. 5.📏 How many ohms (Ω) is 6.1 kΩ?
6. 6.True or false: the ammeter measures current. (a) False (b) True
7. 7.📏 How many milliamperes (mA) is 0.72 A?
8. 8.📏 How many kilo-ohms (kΩ) is 1800 Ω? =
9. 9.True or false: energy used each second is measured in watts (W). (a) False (b) True
10. 10.📏 Which unit measures power? (a) volt (V) (b) watt (W) (c) ampere (A) (d) ohm (Ω)
11. 11.True or false: the ammeter measures voltage. (a) True (b) False
12. 12.📏 How many kilowatts (kW) is 900 W? =
13. 13.True or false: the ammeter is joined across a part. (a) True (b) False
14. 14.📏 How many kilowatts (kW) is 4600 W? =
15. 15.📏 How many ohms (Ω) is 5.4 kΩ?
16. 16.📏 Which unit measures the flow of charge? (a) watt (W) (b) ohm (Ω) (c) ampere (A) (d) volt (V)
17. 17.📏 How many amperes (A) is 1780 mA? =
18. 18.True or false: the voltmeter measures current. (a) False (b) True
19. 19.📏 How many amperes (A) is 320 mA? =
20. 20.📏 How many milliamperes (mA) make 1 ampere? (a) 60 (b) 10 (c) 100 (d) 1000
21. 21.📏 Which unit measures current? (a) volt (V) (b) watt (W) (c) ohm (Ω) (d) ampere (A)
22. 22.True or false: current is measured in amperes (A). (a) True (b) False
23. 23.True or false: current is measured in volts (V). (a) True (b) False
24. 24.Which of these is measured in ohms (Ω)? (a) voltage (b) the push of a cell (c) how much a part resists (d) current
25. 25.📏 In the water-pipe picture of a circuit, current is like … (a) the water pressure (b) the flow of water (c) the pipe colour (d) a narrow pipe
26. 26.Which of these is measured in watts (W)? (a) how much a part resists (b) resistance (c) the flow of charge (d) energy used each second
27. 27.True or false: current is measured in ohms (Ω). (a) True (b) False
28. 28.📏 How many kilo-ohms (kΩ) is 7200 Ω? =
29. 29.📏 How many kilowatts (kW) is 3250 W? =
30. 30.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 100 (b) 10 (c) 1000 (d) 1024
31. 31.📏 How many ohms (Ω) is 5 kΩ?
32. 32.True or false: voltage is measured in volts (V). (a) False (b) True
33. 33.True or false: the push of a cell is measured in volts (V). (a) True (b) False
34. 34.📏 How many kilo-ohms (kΩ) is 2000 Ω? =
35. 35.📏 How many kilo-ohms (kΩ) is 8200 Ω? =
36. 36.📏 How many milliamperes (mA) is 2.04 A?
37. 37.📏 Voltmeter or ammeter: which one is joined in series? (a) voltmeter (b) ammeter
38. 38.Which of these is measured in ohms (Ω)? (a) the push of a cell (b) voltage (c) resistance (d) energy used each second
39. 39.📏 How many watts (W) is 2.6 kW?
40. 40.True or false: how much a part resists is measured in watts (W). (a) True (b) False

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