Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 571 · 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) power (b) the push of a cell (c) voltage (d) current
2. 2.📏 How many kilowatts (kW) is 3100 W? =
3. 3.📏 How many amperes (A) is 160 mA? =
4. 4.📏 Which unit measures how much a part resists? (a) volt (V) (b) watt (W) (c) ampere (A) (d) ohm (Ω)
5. 5.True or false: the ammeter measures current. (a) True (b) False
6. 6.📏 Which unit measures voltage? (a) ohm (Ω) (b) ampere (A) (c) watt (W) (d) volt (V)
7. 7.Which of these is measured in amperes (A)? (a) power (b) voltage (c) current (d) the push of a cell
8. 8.📏 Voltmeter or ammeter: which one measures voltage? (a) ammeter (b) voltmeter
9. 9.True or false: resistance is measured in ohms (Ω). (a) True (b) False
10. 10.Which of these is measured in ohms (Ω)? (a) current (b) voltage (c) the push of a cell (d) resistance
11. 11.True or false: the voltmeter is joined in series. (a) False (b) True
12. 12.📏 How many watts (W) is 2.9 kW?
13. 13.📏 In the water-pipe picture of a circuit, voltage is like … (a) the water tank lid (b) the tap handle (c) the water pressure (d) the pipe colour
14. 14.📏 Which unit measures energy used each second? (a) volt (V) (b) ampere (A) (c) ohm (Ω) (d) watt (W)
15. 15.📏 How many milliamperes (mA) is 1.88 A?
16. 16.True or false: energy used each second is measured in amperes (A). (a) True (b) False
17. 17.True or false: energy used each second is measured in ohms (Ω). (a) True (b) False
18. 18.📏 How many amperes (A) is 1640 mA? =
19. 19.Which of these is measured in watts (W)? (a) how much a part resists (b) voltage (c) the push of a cell (d) energy used each second
20. 20.📏 Which unit measures power? (a) ampere (A) (b) watt (W) (c) ohm (Ω) (d) volt (V)
21. 21.📏 Which unit measures current? (a) watt (W) (b) ohm (Ω) (c) volt (V) (d) ampere (A)
22. 22.📏 How many milliamperes (mA) make 1 ampere? (a) 10 (b) 60 (c) 1000 (d) 100
23. 23.📏 How many kilo-ohms (kΩ) is 7900 Ω? =
24. 24.📏 Which unit measures the flow of charge? (a) watt (W) (b) volt (V) (c) ampere (A) (d) ohm (Ω)
25. 25.📏 How many ohms (Ω) is 8.1 kΩ?
26. 26.True or false: the voltmeter measures current. (a) True (b) False
27. 27.📏 In the water-pipe picture of a circuit, current is like … (a) a narrow pipe (b) the pipe colour (c) the flow of water (d) the water pressure
28. 28.True or false: power is measured in watts (W). (a) True (b) False
29. 29.True or false: the flow of charge is measured in volts (V). (a) True (b) False
30. 30.True or false: the push of a cell is measured in amperes (A). (a) False (b) True
31. 31.📏 How many milliamperes (mA) is 2.3 A?
32. 32.📏 Voltmeter or ammeter: which one is joined across a part? (a) voltmeter (b) ammeter
33. 33.Which of these is measured in volts (V)? (a) how much a part resists (b) current (c) resistance (d) the push of a cell
34. 34.True or false: the flow of charge is measured in amperes (A). (a) True (b) False
35. 35.📏 How many kilo-ohms (kΩ) is 1400 Ω? =
36. 36.Which of these is measured in amperes (A)? (a) the flow of charge (b) resistance (c) the push of a cell (d) voltage
37. 37.📏 How many ohms (Ω) is 3.3 kΩ?
38. 38.True or false: resistance is measured in watts (W). (a) True (b) False
39. 39.📏 How many kilowatts (kW) is 1400 W? =
40. 40.📏 Voltmeter or ammeter: which one is joined in series? (a) voltmeter (b) ammeter

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