Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 989 · 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 current? (a) ohm (Ω) (b) watt (W) (c) volt (V) (d) ampere (A)
2. 2.📏 Which unit measures power? (a) ohm (Ω) (b) ampere (A) (c) watt (W) (d) volt (V)
3. 3.📏 Which unit measures the push of a cell? (a) watt (W) (b) volt (V) (c) ohm (Ω) (d) ampere (A)
4. 4.Which of these is measured in volts (V)? (a) the flow of charge (b) power (c) current (d) the push of a cell
5. 5.Which of these is measured in amperes (A)? (a) resistance (b) how much a part resists (c) voltage (d) current
6. 6.📏 Voltmeter or ammeter: which one measures voltage? (a) voltmeter (b) ammeter
7. 7.📏 In the water-pipe picture of a circuit, resistance is like … (a) the flow of water (b) a narrow pipe (c) the water pressure (d) a bigger tank
8. 8.📏 How many kilowatts (kW) is 50 W? =
9. 9.📏 Which unit measures voltage? (a) ohm (Ω) (b) watt (W) (c) volt (V) (d) ampere (A)
10. 10.📏 Voltmeter or ammeter: which one measures current? (a) ammeter (b) voltmeter
11. 11.True or false: energy used each second is measured in watts (W). (a) False (b) True
12. 12.True or false: the ammeter is joined in series. (a) False (b) True
13. 13.True or false: the ammeter is joined across a part. (a) True (b) False
14. 14.Which of these is measured in amperes (A)? (a) energy used each second (b) the push of a cell (c) the flow of charge (d) voltage
15. 15.📏 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
16. 16.📏 How many kilo-ohms (kΩ) is 1700 Ω? =
17. 17.📏 In the water-pipe picture of a circuit, current is like … (a) the water pressure (b) a narrow pipe (c) the flow of water (d) the pipe colour
18. 18.True or false: the voltmeter measures voltage. (a) False (b) True
19. 19.📏 Which unit measures energy used each second? (a) ampere (A) (b) watt (W) (c) volt (V) (d) ohm (Ω)
20. 20.Which of these is measured in ohms (Ω)? (a) resistance (b) energy used each second (c) voltage (d) the push of a cell
21. 21.📏 How many amperes (A) is 2470 mA? =
22. 22.Which of these is measured in ohms (Ω)? (a) power (b) current (c) how much a part resists (d) the flow of charge
23. 23.📏 How many amperes (A) is 540 mA? =
24. 24.True or false: power is measured in watts (W). (a) False (b) True
25. 25.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 1000 (b) 100 (c) 10 (d) 1024
26. 26.📏 How many kilowatts (kW) is 700 W? =
27. 27.📏 How many milliamperes (mA) make 1 ampere? (a) 60 (b) 1000 (c) 10 (d) 100
28. 28.📏 How many kilo-ohms (kΩ) is 7900 Ω? =
29. 29.📏 Which unit measures how much a part resists? (a) ohm (Ω) (b) volt (V) (c) ampere (A) (d) watt (W)
30. 30.📏 How many milliamperes (mA) is 1.59 A?
31. 31.📏 How many kilo-ohms (kΩ) is 4400 Ω? =
32. 32.📏 Voltmeter or ammeter: which one is joined across a part? (a) voltmeter (b) ammeter
33. 33.📏 How many ohms (Ω) is 1.3 kΩ?
34. 34.📏 Voltmeter or ammeter: which one is joined in series? (a) voltmeter (b) ammeter
35. 35.Which of these is measured in volts (V)? (a) resistance (b) the flow of charge (c) current (d) voltage
36. 36.📏 How many amperes (A) is 260 mA? =
37. 37.True or false: the ammeter measures voltage. (a) True (b) False
38. 38.📏 How many kilowatts (kW) is 250 W? =
39. 39.📏 Which unit measures the flow of charge? (a) ohm (Ω) (b) watt (W) (c) ampere (A) (d) volt (V)
40. 40.True or false: the push of a cell is measured in volts (V). (a) True (b) False

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