Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 827 · 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 make 1 kilo-ohm (kΩ)? (a) 10 (b) 100 (c) 1024 (d) 1000
2. 2.📏 In the water-pipe picture of a circuit, current is like … (a) the pipe colour (b) a narrow pipe (c) the water pressure (d) the flow of water
3. 3.📏 Which unit measures current? (a) ohm (Ω) (b) volt (V) (c) ampere (A) (d) watt (W)
4. 4.True or false: current is measured in amperes (A). (a) True (b) False
5. 5.Which of these is measured in ohms (Ω)? (a) the push of a cell (b) voltage (c) how much a part resists (d) current
6. 6.True or false: how much a part resists is measured in volts (V). (a) True (b) False
7. 7.True or false: how much a part resists is measured in watts (W). (a) False (b) True
8. 8.True or false: voltage is measured in volts (V). (a) True (b) False
9. 9.📏 How many kilowatts (kW) is 2300 W? =
10. 10.📏 Which unit measures how much a part resists? (a) ohm (Ω) (b) volt (V) (c) ampere (A) (d) watt (W)
11. 11.📏 Voltmeter or ammeter: which one is joined in series? (a) voltmeter (b) ammeter
12. 12.📏 How many amperes (A) is 980 mA? =
13. 13.📏 How many ohms (Ω) is 5.3 kΩ?
14. 14.True or false: the ammeter is joined in series. (a) True (b) False
15. 15.True or false: voltage is measured in amperes (A). (a) True (b) False
16. 16.📏 How many ohms (Ω) is 0.2 kΩ?
17. 17.Which of these is measured in volts (V)? (a) the flow of charge (b) energy used each second (c) voltage (d) resistance
18. 18.True or false: the voltmeter measures current. (a) False (b) True
19. 19.📏 How many ohms (Ω) is 5.4 kΩ?
20. 20.📏 How many milliamperes (mA) is 2.33 A?
21. 21.📏 In the water-pipe picture of a circuit, voltage is like … (a) the tap handle (b) the water pressure (c) the pipe colour (d) the water tank lid
22. 22.📏 How many ohms (Ω) is 2.4 kΩ?
23. 23.📏 Voltmeter or ammeter: which one measures voltage? (a) ammeter (b) voltmeter
24. 24.Which of these is measured in watts (W)? (a) power (b) current (c) resistance (d) the flow of charge
25. 25.📏 In the water-pipe picture of a circuit, resistance is like … (a) a narrow pipe (b) the water pressure (c) a bigger tank (d) the flow of water
26. 26.Which of these is measured in amperes (A)? (a) power (b) the flow of charge (c) voltage (d) how much a part resists
27. 27.📏 How many amperes (A) is 1850 mA? =
28. 28.📏 How many milliamperes (mA) make 1 ampere? (a) 10 (b) 100 (c) 60 (d) 1000
29. 29.Which of these is measured in ohms (Ω)? (a) the push of a cell (b) energy used each second (c) power (d) resistance
30. 30.📏 How many kilo-ohms (kΩ) is 3600 Ω? =
31. 31.📏 Voltmeter or ammeter: which one is joined across a part? (a) voltmeter (b) ammeter
32. 32.📏 Which unit measures the flow of charge? (a) ampere (A) (b) volt (V) (c) ohm (Ω) (d) watt (W)
33. 33.📏 Which unit measures the push of a cell? (a) ohm (Ω) (b) volt (V) (c) watt (W) (d) ampere (A)
34. 34.📏 Which unit measures voltage? (a) ampere (A) (b) volt (V) (c) watt (W) (d) ohm (Ω)
35. 35.📏 Which unit measures energy used each second? (a) watt (W) (b) ampere (A) (c) volt (V) (d) ohm (Ω)
36. 36.True or false: the push of a cell is measured in volts (V). (a) True (b) False
37. 37.📏 How many milliamperes (mA) is 1.12 A?
38. 38.True or false: the ammeter measures current. (a) True (b) False
39. 39.📏 How many watts (W) is 2.9 kW?
40. 40.📏 How many kilo-ohms (kΩ) is 6500 Ω? =

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