Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 516 · 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.True or false: the push of a cell is measured in amperes (A). (a) False (b) True
2. 2.True or false: the voltmeter measures current. (a) False (b) True
3. 3.📏 Which unit measures current? (a) watt (W) (b) ampere (A) (c) volt (V) (d) ohm (Ω)
4. 4.True or false: power is measured in watts (W). (a) False (b) True
5. 5.📏 Voltmeter or ammeter: which one is joined across a part? (a) ammeter (b) voltmeter
6. 6.📏 Which unit measures voltage? (a) volt (V) (b) ohm (Ω) (c) ampere (A) (d) watt (W)
7. 7.📏 Which unit measures how much a part resists? (a) ampere (A) (b) ohm (Ω) (c) volt (V) (d) watt (W)
8. 8.📏 How many ohms (Ω) is 9.7 kΩ?
9. 9.📏 How many watts (W) is 1.7 kW?
10. 10.True or false: the push of a cell is measured in watts (W). (a) True (b) False
11. 11.📏 How many ohms (Ω) is 0.5 kΩ?
12. 12.True or false: the ammeter is joined across a part. (a) False (b) True
13. 13.📏 Which unit measures the flow of charge? (a) volt (V) (b) ampere (A) (c) ohm (Ω) (d) watt (W)
14. 14.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 100 (b) 10 (c) 1024 (d) 1000
15. 15.Which of these is measured in amperes (A)? (a) power (b) how much a part resists (c) resistance (d) the flow of charge
16. 16.📏 How many milliamperes (mA) is 1.48 A?
17. 17.Which of these is measured in volts (V)? (a) current (b) energy used each second (c) voltage (d) how much a part resists
18. 18.📏 How many watts (W) is 1.8 kW?
19. 19.📏 How many milliamperes (mA) is 0.21 A?
20. 20.True or false: the ammeter is joined in series. (a) False (b) True
21. 21.Which of these is measured in watts (W)? (a) current (b) energy used each second (c) how much a part resists (d) the push of a cell
22. 22.Which of these is measured in volts (V)? (a) the push of a cell (b) resistance (c) the flow of charge (d) how much a part resists
23. 23.📏 How many milliamperes (mA) make 1 ampere? (a) 60 (b) 100 (c) 10 (d) 1000
24. 24.📏 How many amperes (A) is 580 mA? =
25. 25.True or false: the flow of charge is measured in watts (W). (a) True (b) False
26. 26.True or false: the voltmeter is joined in series. (a) False (b) True
27. 27.📏 How many ohms (Ω) is 4.5 kΩ?
28. 28.📏 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
29. 29.📏 In the water-pipe picture of a circuit, voltage is like … (a) the tap handle (b) the water pressure (c) the water tank lid (d) the pipe colour
30. 30.📏 How many kilo-ohms (kΩ) is 7000 Ω? =
31. 31.True or false: the push of a cell is measured in volts (V). (a) False (b) True
32. 32.📏 How many kilowatts (kW) is 4900 W? =
33. 33.📏 How many ohms (Ω) is 10 kΩ?
34. 34.True or false: the flow of charge is measured in amperes (A). (a) False (b) True
35. 35.📏 Voltmeter or ammeter: which one measures voltage? (a) ammeter (b) voltmeter
36. 36.True or false: the ammeter measures current. (a) True (b) False
37. 37.📏 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
38. 38.Which of these is measured in ohms (Ω)? (a) voltage (b) power (c) the push of a cell (d) how much a part resists
39. 39.📏 How many kilo-ohms (kΩ) is 7300 Ω? =
40. 40.📏 Which unit measures resistance? (a) volt (V) (b) ampere (A) (c) watt (W) (d) ohm (Ω)

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