Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 849 · 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 how much a part resists? (a) watt (W) (b) ampere (A) (c) volt (V) (d) ohm (Ω)
2. 2.📏 How many kilowatts (kW) is 3150 W? =
3. 3.True or false: voltage is measured in volts (V). (a) False (b) True
4. 4.Which of these is measured in ohms (Ω)? (a) the push of a cell (b) voltage (c) resistance (d) energy used each second
5. 5.True or false: the flow of charge is measured in watts (W). (a) True (b) False
6. 6.📏 Which unit measures energy used each second? (a) ampere (A) (b) watt (W) (c) volt (V) (d) ohm (Ω)
7. 7.📏 Which unit measures the flow of charge? (a) ohm (Ω) (b) ampere (A) (c) volt (V) (d) watt (W)
8. 8.📏 In the water-pipe picture of a circuit, current is like … (a) the flow of water (b) the pipe colour (c) a narrow pipe (d) the water pressure
9. 9.True or false: the ammeter measures current. (a) False (b) True
10. 10.True or false: power is measured in ohms (Ω). (a) False (b) True
11. 11.📏 How many kilowatts (kW) is 1150 W? =
12. 12.True or false: the push of a cell is measured in volts (V). (a) True (b) False
13. 13.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 100 (b) 1000 (c) 10 (d) 1024
14. 14.Which of these is measured in watts (W)? (a) the flow of charge (b) current (c) how much a part resists (d) energy used each second
15. 15.📏 How many amperes (A) is 1870 mA? =
16. 16.📏 How many amperes (A) is 2540 mA? =
17. 17.📏 How many kilo-ohms (kΩ) is 10000 Ω? =
18. 18.True or false: the voltmeter measures voltage. (a) True (b) False
19. 19.📏 How many milliamperes (mA) is 1.32 A?
20. 20.True or false: the flow of charge is measured in volts (V). (a) True (b) False
21. 21.📏 Voltmeter or ammeter: which one is joined across a part? (a) voltmeter (b) ammeter
22. 22.📏 Which unit measures current? (a) watt (W) (b) volt (V) (c) ampere (A) (d) ohm (Ω)
23. 23.Which of these is measured in amperes (A)? (a) current (b) power (c) energy used each second (d) voltage
24. 24.📏 How many kilo-ohms (kΩ) is 6500 Ω? =
25. 25.📏 How many ohms (Ω) is 3.7 kΩ?
26. 26.📏 Voltmeter or ammeter: which one measures current? (a) ammeter (b) voltmeter
27. 27.📏 How many milliamperes (mA) is 2.83 A?
28. 28.True or false: how much a part resists is measured in volts (V). (a) True (b) False
29. 29.Which of these is measured in amperes (A)? (a) how much a part resists (b) the flow of charge (c) voltage (d) the push of a cell
30. 30.Which of these is measured in volts (V)? (a) voltage (b) the flow of charge (c) how much a part resists (d) resistance
31. 31.True or false: the push of a cell is measured in amperes (A). (a) False (b) True
32. 32.📏 How many amperes (A) is 1740 mA? =
33. 33.📏 Which unit measures power? (a) ampere (A) (b) ohm (Ω) (c) volt (V) (d) watt (W)
34. 34.True or false: resistance is measured in volts (V). (a) True (b) False
35. 35.📏 Which unit measures voltage? (a) ampere (A) (b) watt (W) (c) ohm (Ω) (d) volt (V)
36. 36.📏 How many milliamperes (mA) is 0.78 A?
37. 37.📏 Voltmeter or ammeter: which one measures voltage? (a) ammeter (b) voltmeter
38. 38.Which of these is measured in watts (W)? (a) current (b) power (c) resistance (d) how much a part resists
39. 39.📏 How many milliamperes (mA) is 2.44 A?
40. 40.📏 How many watts (W) is 0.4 kW?

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