Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 23 · 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) ohm (Ω) (b) ampere (A) (c) volt (V) (d) watt (W)
2. 2.📏 Voltmeter or ammeter: which one is joined across a part? (a) ammeter (b) voltmeter
3. 3.📏 Voltmeter or ammeter: which one measures voltage? (a) ammeter (b) voltmeter
4. 4.📏 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
5. 5.📏 In the water-pipe picture of a circuit, current is like … (a) the flow of water (b) the water pressure (c) the pipe colour (d) a narrow pipe
6. 6.📏 Voltmeter or ammeter: which one is joined in series? (a) ammeter (b) voltmeter
7. 7.📏 Which unit measures how much a part resists? (a) volt (V) (b) watt (W) (c) ohm (Ω) (d) ampere (A)
8. 8.True or false: energy used each second is measured in ohms (Ω). (a) False (b) True
9. 9.📏 How many milliamperes (mA) is 2.51 A?
10. 10.📏 How many amperes (A) is 120 mA? =
11. 11.📏 How many kilowatts (kW) is 3750 W? =
12. 12.True or false: power is measured in volts (V). (a) False (b) True
13. 13.📏 How many amperes (A) is 1510 mA? =
14. 14.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 100 (b) 10 (c) 1000 (d) 1024
15. 15.📏 Which unit measures power? (a) volt (V) (b) ampere (A) (c) watt (W) (d) ohm (Ω)
16. 16.True or false: the ammeter measures voltage. (a) True (b) False
17. 17.📏 How many kilo-ohms (kΩ) is 3400 Ω? =
18. 18.True or false: energy used each second is measured in watts (W). (a) True (b) False
19. 19.True or false: the voltmeter measures current. (a) False (b) True
20. 20.📏 In the water-pipe picture of a circuit, voltage is like … (a) the pipe colour (b) the water tank lid (c) the water pressure (d) the tap handle
21. 21.True or false: the voltmeter is joined in series. (a) True (b) False
22. 22.📏 Voltmeter or ammeter: which one measures current? (a) ammeter (b) voltmeter
23. 23.📏 How many amperes (A) is 1720 mA? =
24. 24.📏 How many ohms (Ω) is 0.5 kΩ?
25. 25.True or false: voltage is measured in volts (V). (a) False (b) True
26. 26.True or false: the voltmeter measures voltage. (a) True (b) False
27. 27.True or false: the ammeter is joined in series. (a) False (b) True
28. 28.📏 How many ohms (Ω) is 2.4 kΩ?
29. 29.📏 How many amperes (A) is 2780 mA? =
30. 30.Which of these is measured in watts (W)? (a) how much a part resists (b) resistance (c) voltage (d) energy used each second
31. 31.📏 How many ohms (Ω) is 7.4 kΩ?
32. 32.📏 Which unit measures current? (a) ohm (Ω) (b) volt (V) (c) ampere (A) (d) watt (W)
33. 33.📏 Which unit measures energy used each second? (a) volt (V) (b) ampere (A) (c) ohm (Ω) (d) watt (W)
34. 34.Which of these is measured in amperes (A)? (a) how much a part resists (b) current (c) resistance (d) power
35. 35.📏 Which unit measures the flow of charge? (a) volt (V) (b) watt (W) (c) ampere (A) (d) ohm (Ω)
36. 36.📏 How many kilowatts (kW) is 300 W? =
37. 37.True or false: power is measured in watts (W). (a) False (b) True
38. 38.True or false: the push of a cell is measured in volts (V). (a) True (b) False
39. 39.📏 How many milliamperes (mA) is 0.67 A?
40. 40.📏 How many kilo-ohms (kΩ) is 200 Ω? =

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