Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 768 · 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 watts (W)? (a) the push of a cell (b) the flow of charge (c) energy used each second (d) current
2. 2.📏 In the water-pipe picture of a circuit, voltage is like … (a) the water tank lid (b) the water pressure (c) the tap handle (d) the pipe colour
3. 3.📏 Which unit measures current? (a) volt (V) (b) ampere (A) (c) ohm (Ω) (d) watt (W)
4. 4.📏 Voltmeter or ammeter: which one is joined in series? (a) ammeter (b) voltmeter
5. 5.📏 Which unit measures the flow of charge? (a) watt (W) (b) ampere (A) (c) ohm (Ω) (d) volt (V)
6. 6.📏 Voltmeter or ammeter: which one is joined across a part? (a) ammeter (b) voltmeter
7. 7.📏 Which unit measures resistance? (a) ampere (A) (b) watt (W) (c) volt (V) (d) ohm (Ω)
8. 8.📏 Voltmeter or ammeter: which one measures current? (a) ammeter (b) voltmeter
9. 9.True or false: voltage is measured in amperes (A). (a) False (b) True
10. 10.Which of these is measured in watts (W)? (a) voltage (b) the flow of charge (c) the push of a cell (d) power
11. 11.True or false: the voltmeter measures voltage. (a) True (b) False
12. 12.📏 Which unit measures power? (a) watt (W) (b) volt (V) (c) ampere (A) (d) ohm (Ω)
13. 13.📏 How many kilo-ohms (kΩ) is 7300 Ω? =
14. 14.📏 How many ohms (Ω) is 5.5 kΩ?
15. 15.📏 Voltmeter or ammeter: which one measures voltage? (a) voltmeter (b) ammeter
16. 16.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 1024 (b) 100 (c) 1000 (d) 10
17. 17.📏 How many kilowatts (kW) is 1400 W? =
18. 18.📏 How many amperes (A) is 680 mA? =
19. 19.True or false: the flow of charge is measured in watts (W). (a) False (b) True
20. 20.Which of these is measured in ohms (Ω)? (a) power (b) energy used each second (c) current (d) resistance
21. 21.Which of these is measured in volts (V)? (a) power (b) the flow of charge (c) voltage (d) resistance
22. 22.📏 Which unit measures energy used each second? (a) volt (V) (b) ampere (A) (c) watt (W) (d) ohm (Ω)
23. 23.📏 How many milliamperes (mA) make 1 ampere? (a) 60 (b) 100 (c) 10 (d) 1000
24. 24.📏 How many kilowatts (kW) is 1650 W? =
25. 25.True or false: how much a part resists is measured in ohms (Ω). (a) False (b) True
26. 26.True or false: the voltmeter is joined across a part. (a) True (b) False
27. 27.📏 How many watts (W) is 0.4 kW?
28. 28.📏 How many milliamperes (mA) is 1.91 A?
29. 29.True or false: the voltmeter measures current. (a) True (b) False
30. 30.📏 How many ohms (Ω) is 3.2 kΩ?
31. 31.Which of these is measured in amperes (A)? (a) energy used each second (b) voltage (c) current (d) the push of a cell
32. 32.True or false: the flow of charge is measured in ohms (Ω). (a) True (b) False
33. 33.True or false: the ammeter measures voltage. (a) False (b) True
34. 34.📏 How many amperes (A) is 1160 mA? =
35. 35.📏 How many kilowatts (kW) is 1100 W? =
36. 36.True or false: the ammeter is joined across a part. (a) False (b) True
37. 37.True or false: power is measured in watts (W). (a) True (b) False
38. 38.True or false: the ammeter measures current. (a) True (b) False
39. 39.📏 How many milliamperes (mA) is 2.67 A?
40. 40.📏 How many milliamperes (mA) is 1.51 A?

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