Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 121 · 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 ohms (Ω) is 7.2 kΩ?
2. 2.📏 How many kilo-ohms (kΩ) is 9000 Ω? =
3. 3.Which of these is measured in watts (W)? (a) how much a part resists (b) power (c) current (d) voltage
4. 4.📏 Voltmeter or ammeter: which one measures voltage? (a) voltmeter (b) ammeter
5. 5.📏 How many kilo-ohms (kΩ) is 9200 Ω? =
6. 6.📏 Which unit measures the push of a cell? (a) watt (W) (b) ohm (Ω) (c) volt (V) (d) ampere (A)
7. 7.Which of these is measured in volts (V)? (a) the push of a cell (b) current (c) energy used each second (d) the flow of charge
8. 8.True or false: the ammeter measures voltage. (a) True (b) False
9. 9.📏 How many watts (W) is 1 kW?
10. 10.Which of these is measured in ohms (Ω)? (a) the push of a cell (b) the flow of charge (c) current (d) resistance
11. 11.📏 Voltmeter or ammeter: which one measures current? (a) ammeter (b) voltmeter
12. 12.True or false: current is measured in ohms (Ω). (a) False (b) True
13. 13.📏 How many kilo-ohms (kΩ) is 4500 Ω? =
14. 14.Which of these is measured in ohms (Ω)? (a) the push of a cell (b) energy used each second (c) power (d) how much a part resists
15. 15.True or false: the voltmeter is joined across a part. (a) True (b) False
16. 16.True or false: the voltmeter is joined in series. (a) True (b) False
17. 17.📏 How many watts (W) is 0.6 kW?
18. 18.True or false: the push of a cell is measured in ohms (Ω). (a) True (b) False
19. 19.📏 Which unit measures power? (a) watt (W) (b) ohm (Ω) (c) volt (V) (d) ampere (A)
20. 20.True or false: the ammeter measures current. (a) False (b) True
21. 21.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 1024 (b) 100 (c) 1000 (d) 10
22. 22.📏 Which unit measures current? (a) volt (V) (b) ohm (Ω) (c) ampere (A) (d) watt (W)
23. 23.True or false: how much a part resists is measured in amperes (A). (a) False (b) True
24. 24.📏 How many milliamperes (mA) is 0.23 A?
25. 25.📏 How many watts (W) is 3.2 kW?
26. 26.True or false: the flow of charge is measured in ohms (Ω). (a) False (b) True
27. 27.📏 Which unit measures energy used each second? (a) volt (V) (b) ampere (A) (c) ohm (Ω) (d) watt (W)
28. 28.Which of these is measured in watts (W)? (a) the push of a cell (b) energy used each second (c) voltage (d) the flow of charge
29. 29.Which of these is measured in volts (V)? (a) power (b) current (c) energy used each second (d) voltage
30. 30.📏 How many kilowatts (kW) is 850 W? =
31. 31.True or false: resistance is measured in ohms (Ω). (a) False (b) True
32. 32.Which of these is measured in amperes (A)? (a) power (b) voltage (c) current (d) how much a part resists
33. 33.📏 How many amperes (A) is 2010 mA? =
34. 34.📏 Voltmeter or ammeter: which one is joined across a part? (a) ammeter (b) voltmeter
35. 35.📏 In the water-pipe picture of a circuit, voltage is like … (a) the water tank lid (b) the water pressure (c) the pipe colour (d) the tap handle
36. 36.📏 Which unit measures how much a part resists? (a) ampere (A) (b) volt (V) (c) watt (W) (d) ohm (Ω)
37. 37.📏 How many ohms (Ω) is 5.4 kΩ?
38. 38.📏 How many kilowatts (kW) is 2800 W? =
39. 39.📏 How many amperes (A) is 2580 mA? =
40. 40.True or false: energy used each second is measured in amperes (A). (a) True (b) False

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