Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 471 · 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.📏 Voltmeter or ammeter: which one is joined across a part? (a) voltmeter (b) ammeter
2. 2.Which of these is measured in ohms (Ω)? (a) current (b) the flow of charge (c) voltage (d) how much a part resists
3. 3.True or false: the ammeter measures current. (a) False (b) True
4. 4.📏 Which unit measures voltage? (a) ampere (A) (b) ohm (Ω) (c) watt (W) (d) volt (V)
5. 5.📏 Voltmeter or ammeter: which one is joined in series? (a) voltmeter (b) ammeter
6. 6.Which of these is measured in volts (V)? (a) current (b) the flow of charge (c) power (d) voltage
7. 7.📏 How many milliamperes (mA) is 0.57 A?
8. 8.📏 Which unit measures energy used each second? (a) volt (V) (b) ampere (A) (c) ohm (Ω) (d) watt (W)
9. 9.📏 Which unit measures power? (a) ohm (Ω) (b) ampere (A) (c) volt (V) (d) watt (W)
10. 10.📏 How many kilowatts (kW) is 1150 W? =
11. 11.📏 How many amperes (A) is 2220 mA? =
12. 12.📏 How many milliamperes (mA) is 1.16 A?
13. 13.True or false: voltage is measured in amperes (A). (a) False (b) True
14. 14.📏 How many watts (W) is 4 kW?
15. 15.True or false: voltage is measured in ohms (Ω). (a) True (b) False
16. 16.Which of these is measured in watts (W)? (a) voltage (b) power (c) the flow of charge (d) the push of a cell
17. 17.📏 Which unit measures current? (a) ohm (Ω) (b) volt (V) (c) ampere (A) (d) watt (W)
18. 18.📏 How many kilo-ohms (kΩ) is 5800 Ω? =
19. 19.📏 How many milliamperes (mA) is 1.3 A?
20. 20.📏 How many kilo-ohms (kΩ) is 10000 Ω? =
21. 21.True or false: voltage is measured in volts (V). (a) False (b) True
22. 22.📏 Voltmeter or ammeter: which one measures voltage? (a) ammeter (b) voltmeter
23. 23.📏 In the water-pipe picture of a circuit, current is like … (a) the pipe colour (b) the water pressure (c) a narrow pipe (d) the flow of water
24. 24.True or false: the flow of charge is measured in volts (V). (a) False (b) True
25. 25.📏 In the water-pipe picture of a circuit, voltage is like … (a) the water pressure (b) the pipe colour (c) the tap handle (d) the water tank lid
26. 26.True or false: energy used each second is measured in watts (W). (a) False (b) True
27. 27.📏 How many ohms (Ω) is 5.3 kΩ?
28. 28.True or false: the push of a cell is measured in watts (W). (a) False (b) True
29. 29.True or false: the voltmeter is joined across a part. (a) False (b) True
30. 30.True or false: the ammeter measures voltage. (a) True (b) False
31. 31.True or false: how much a part resists is measured in amperes (A). (a) False (b) True
32. 32.True or false: the voltmeter measures voltage. (a) True (b) False
33. 33.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 1024 (b) 1000 (c) 100 (d) 10
34. 34.Which of these is measured in watts (W)? (a) energy used each second (b) current (c) the flow of charge (d) voltage
35. 35.📏 How many kilo-ohms (kΩ) is 9900 Ω? =
36. 36.📏 How many ohms (Ω) is 4 kΩ?
37. 37.📏 In the water-pipe picture of a circuit, resistance is like … (a) the flow of water (b) a narrow pipe (c) a bigger tank (d) the water pressure
38. 38.📏 How many amperes (A) is 890 mA? =
39. 39.📏 How many amperes (A) is 800 mA? =
40. 40.True or false: the ammeter is joined across a part. (a) True (b) False

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