Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 673 · 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 of these is measured in ohms (Ω)? (a) current (b) how much a part resists (c) power (d) the flow of charge
2. 2.Which of these is measured in watts (W)? (a) energy used each second (b) voltage (c) the push of a cell (d) how much a part resists
3. 3.📏 How many amperes (A) is 1560 mA? =
4. 4.True or false: the flow of charge is measured in ohms (Ω). (a) True (b) False
5. 5.📏 In the water-pipe picture of a circuit, resistance is like … (a) the water pressure (b) a narrow pipe (c) the flow of water (d) a bigger tank
6. 6.True or false: voltage is measured in volts (V). (a) False (b) True
7. 7.📏 Which unit measures resistance? (a) watt (W) (b) ampere (A) (c) volt (V) (d) ohm (Ω)
8. 8.📏 Which unit measures voltage? (a) watt (W) (b) volt (V) (c) ampere (A) (d) ohm (Ω)
9. 9.📏 How many kilowatts (kW) is 950 W? =
10. 10.📏 Voltmeter or ammeter: which one measures current? (a) ammeter (b) voltmeter
11. 11.Which of these is measured in volts (V)? (a) how much a part resists (b) voltage (c) the flow of charge (d) power
12. 12.Which of these is measured in watts (W)? (a) the push of a cell (b) current (c) power (d) the flow of charge
13. 13.📏 Which unit measures how much a part resists? (a) watt (W) (b) volt (V) (c) ampere (A) (d) ohm (Ω)
14. 14.📏 Voltmeter or ammeter: which one measures voltage? (a) voltmeter (b) ammeter
15. 15.True or false: the voltmeter is joined across a part. (a) True (b) False
16. 16.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 1000 (b) 1024 (c) 100 (d) 10
17. 17.📏 Which unit measures energy used each second? (a) volt (V) (b) ampere (A) (c) watt (W) (d) ohm (Ω)
18. 18.📏 How many kilo-ohms (kΩ) is 4500 Ω? =
19. 19.Which of these is measured in ohms (Ω)? (a) energy used each second (b) power (c) resistance (d) current
20. 20.📏 How many watts (W) is 2.8 kW?
21. 21.True or false: the ammeter is joined across a part. (a) True (b) False
22. 22.📏 How many milliamperes (mA) is 0.11 A?
23. 23.📏 How many ohms (Ω) is 6.8 kΩ?
24. 24.True or false: current is measured in amperes (A). (a) True (b) False
25. 25.📏 Voltmeter or ammeter: which one is joined in series? (a) ammeter (b) voltmeter
26. 26.📏 How many amperes (A) is 2920 mA? =
27. 27.📏 How many milliamperes (mA) is 2.08 A?
28. 28.📏 How many ohms (Ω) is 6.1 kΩ?
29. 29.True or false: the ammeter measures voltage. (a) True (b) False
30. 30.True or false: the voltmeter is joined in series. (a) True (b) False
31. 31.True or false: the voltmeter measures voltage. (a) True (b) False
32. 32.📏 How many kilowatts (kW) is 300 W? =
33. 33.True or false: the ammeter measures current. (a) True (b) False
34. 34.📏 How many milliamperes (mA) make 1 ampere? (a) 10 (b) 100 (c) 60 (d) 1000
35. 35.📏 In the water-pipe picture of a circuit, voltage is like … (a) the water tank lid (b) the pipe colour (c) the water pressure (d) the tap handle
36. 36.True or false: the push of a cell is measured in amperes (A). (a) False (b) True
37. 37.📏 Which unit measures the push of a cell? (a) ohm (Ω) (b) watt (W) (c) ampere (A) (d) volt (V)
38. 38.Which of these is measured in amperes (A)? (a) the push of a cell (b) current (c) how much a part resists (d) power
39. 39.📏 In the water-pipe picture of a circuit, current is like … (a) the water pressure (b) a narrow pipe (c) the pipe colour (d) the flow of water
40. 40.📏 How many kilo-ohms (kΩ) is 3900 Ω? =

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