Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 739 · 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 kilo-ohms (kΩ) is 1400 Ω? =
2. 2.📏 In the water-pipe picture of a circuit, resistance is like … (a) the flow of water (b) the water pressure (c) a bigger tank (d) a narrow pipe
3. 3.📏 Which unit measures energy used each second? (a) ampere (A) (b) watt (W) (c) volt (V) (d) ohm (Ω)
4. 4.📏 How many kilowatts (kW) is 3500 W? =
5. 5.📏 How many kilowatts (kW) is 2950 W? =
6. 6.📏 Which unit measures resistance? (a) watt (W) (b) ampere (A) (c) volt (V) (d) ohm (Ω)
7. 7.📏 Which unit measures the flow of charge? (a) ohm (Ω) (b) ampere (A) (c) watt (W) (d) volt (V)
8. 8.True or false: the ammeter measures voltage. (a) False (b) True
9. 9.True or false: resistance is measured in volts (V). (a) False (b) True
10. 10.True or false: the flow of charge is measured in amperes (A). (a) True (b) False
11. 11.Which of these is measured in amperes (A)? (a) energy used each second (b) the push of a cell (c) voltage (d) the flow of charge
12. 12.📏 How many milliamperes (mA) is 2.7 A?
13. 13.True or false: the flow of charge is measured in volts (V). (a) True (b) False
14. 14.📏 Which unit measures how much a part resists? (a) volt (V) (b) watt (W) (c) ampere (A) (d) ohm (Ω)
15. 15.📏 How many ohms (Ω) is 4.6 kΩ?
16. 16.Which of these is measured in ohms (Ω)? (a) the push of a cell (b) resistance (c) voltage (d) the flow of charge
17. 17.True or false: resistance is measured in ohms (Ω). (a) True (b) False
18. 18.True or false: energy used each second is measured in watts (W). (a) False (b) True
19. 19.Which of these is measured in watts (W)? (a) resistance (b) energy used each second (c) current (d) the flow of charge
20. 20.📏 Which unit measures the push of a cell? (a) ohm (Ω) (b) ampere (A) (c) watt (W) (d) volt (V)
21. 21.True or false: power is measured in watts (W). (a) True (b) False
22. 22.📏 Voltmeter or ammeter: which one is joined across a part? (a) ammeter (b) voltmeter
23. 23.True or false: the ammeter measures current. (a) True (b) False
24. 24.Which of these is measured in watts (W)? (a) voltage (b) the flow of charge (c) current (d) power
25. 25.📏 How many ohms (Ω) is 2.5 kΩ?
26. 26.True or false: voltage is measured in volts (V). (a) False (b) True
27. 27.📏 How many milliamperes (mA) is 0.49 A?
28. 28.📏 Which unit measures power? (a) ohm (Ω) (b) ampere (A) (c) watt (W) (d) volt (V)
29. 29.📏 Which unit measures voltage? (a) ampere (A) (b) ohm (Ω) (c) watt (W) (d) volt (V)
30. 30.Which of these is measured in volts (V)? (a) the flow of charge (b) how much a part resists (c) voltage (d) resistance
31. 31.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 1000 (b) 10 (c) 100 (d) 1024
32. 32.📏 How many kilowatts (kW) is 1700 W? =
33. 33.📏 How many watts (W) is 2.4 kW?
34. 34.📏 How many milliamperes (mA) is 0.25 A?
35. 35.📏 Voltmeter or ammeter: which one measures voltage? (a) voltmeter (b) ammeter
36. 36.📏 Which unit measures current? (a) watt (W) (b) ohm (Ω) (c) ampere (A) (d) volt (V)
37. 37.True or false: the push of a cell is measured in volts (V). (a) False (b) True
38. 38.Which of these is measured in volts (V)? (a) energy used each second (b) how much a part resists (c) the push of a cell (d) power
39. 39.📏 How many milliamperes (mA) make 1 ampere? (a) 1000 (b) 60 (c) 10 (d) 100
40. 40.📏 In the water-pipe picture of a circuit, voltage is like … (a) the pipe colour (b) the tap handle (c) the water tank lid (d) the water pressure

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