Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 990 · 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 unit measures voltage? (a) watt (W) (b) volt (V) (c) ohm (Ω) (d) ampere (A)
2. 2.📏 How many ohms (Ω) is 6.1 kΩ?
3. 3.📏 In the water-pipe picture of a circuit, voltage is like … (a) the pipe colour (b) the tap handle (c) the water pressure (d) the water tank lid
4. 4.📏 How many watts (W) is 2.7 kW?
5. 5.Which of these is measured in amperes (A)? (a) energy used each second (b) the flow of charge (c) how much a part resists (d) the push of a cell
6. 6.📏 How many kilo-ohms (kΩ) is 5900 Ω? =
7. 7.True or false: the ammeter is joined across a part. (a) False (b) True
8. 8.📏 How many milliamperes (mA) is 2.06 A?
9. 9.True or false: the push of a cell is measured in ohms (Ω). (a) True (b) False
10. 10.True or false: current is measured in watts (W). (a) True (b) False
11. 11.True or false: voltage is measured in watts (W). (a) False (b) True
12. 12.📏 How many amperes (A) is 1620 mA? =
13. 13.📏 Voltmeter or ammeter: which one is joined in series? (a) voltmeter (b) ammeter
14. 14.📏 How many kilowatts (kW) is 1950 W? =
15. 15.📏 How many amperes (A) is 2610 mA? =
16. 16.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 10 (b) 1000 (c) 1024 (d) 100
17. 17.📏 How many ohms (Ω) is 3.6 kΩ?
18. 18.📏 Which unit measures power? (a) ohm (Ω) (b) ampere (A) (c) watt (W) (d) volt (V)
19. 19.True or false: power is measured in watts (W). (a) True (b) False
20. 20.📏 In the water-pipe picture of a circuit, current is like … (a) the pipe colour (b) the flow of water (c) a narrow pipe (d) the water pressure
21. 21.Which of these is measured in amperes (A)? (a) energy used each second (b) the push of a cell (c) voltage (d) current
22. 22.📏 Which unit measures energy used each second? (a) volt (V) (b) ampere (A) (c) watt (W) (d) ohm (Ω)
23. 23.📏 Which unit measures how much a part resists? (a) volt (V) (b) ohm (Ω) (c) ampere (A) (d) watt (W)
24. 24.📏 Voltmeter or ammeter: which one is joined across a part? (a) ammeter (b) voltmeter
25. 25.📏 Voltmeter or ammeter: which one measures voltage? (a) voltmeter (b) ammeter
26. 26.📏 How many milliamperes (mA) make 1 ampere? (a) 10 (b) 100 (c) 1000 (d) 60
27. 27.📏 How many ohms (Ω) is 10 kΩ?
28. 28.True or false: energy used each second is measured in volts (V). (a) True (b) False
29. 29.True or false: the voltmeter is joined across a part. (a) False (b) True
30. 30.Which of these is measured in watts (W)? (a) current (b) energy used each second (c) the push of a cell (d) how much a part resists
31. 31.Which of these is measured in volts (V)? (a) how much a part resists (b) voltage (c) the flow of charge (d) energy used each second
32. 32.True or false: the voltmeter measures current. (a) True (b) False
33. 33.Which of these is measured in ohms (Ω)? (a) resistance (b) energy used each second (c) the flow of charge (d) power
34. 34.True or false: the ammeter measures voltage. (a) False (b) True
35. 35.📏 How many kilo-ohms (kΩ) is 700 Ω? =
36. 36.True or false: the ammeter is joined in series. (a) True (b) False
37. 37.📏 How many kilo-ohms (kΩ) is 3500 Ω? =
38. 38.📏 How many kilowatts (kW) is 3600 W? =
39. 39.📏 How many watts (W) is 4.7 kW?
40. 40.📏 How many watts (W) is 4.5 kW?

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