Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 657 · 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: power is measured in watts (W). (a) False (b) True
2. 2.📏 How many kilo-ohms (kΩ) is 8000 Ω? =
3. 3.📏 How many milliamperes (mA) is 0.08 A?
4. 4.📏 Voltmeter or ammeter: which one is joined across a part? (a) ammeter (b) voltmeter
5. 5.📏 Which unit measures voltage? (a) watt (W) (b) ampere (A) (c) volt (V) (d) ohm (Ω)
6. 6.📏 How many milliamperes (mA) is 2.21 A?
7. 7.Which of these is measured in watts (W)? (a) voltage (b) current (c) energy used each second (d) how much a part resists
8. 8.True or false: voltage is measured in volts (V). (a) True (b) False
9. 9.📏 In the water-pipe picture of a circuit, current is like … (a) the water pressure (b) the pipe colour (c) the flow of water (d) a narrow pipe
10. 10.📏 Which unit measures the push of a cell? (a) watt (W) (b) volt (V) (c) ohm (Ω) (d) ampere (A)
11. 11.True or false: voltage is measured in ohms (Ω). (a) True (b) False
12. 12.True or false: resistance is measured in watts (W). (a) True (b) False
13. 13.📏 Which unit measures power? (a) ampere (A) (b) volt (V) (c) ohm (Ω) (d) watt (W)
14. 14.True or false: the ammeter measures voltage. (a) True (b) False
15. 15.📏 Voltmeter or ammeter: which one is joined in series? (a) voltmeter (b) ammeter
16. 16.📏 Which unit measures energy used each second? (a) volt (V) (b) ohm (Ω) (c) watt (W) (d) ampere (A)
17. 17.📏 How many kilo-ohms (kΩ) is 7900 Ω? =
18. 18.📏 How many kilowatts (kW) is 2800 W? =
19. 19.True or false: the flow of charge is measured in amperes (A). (a) False (b) True
20. 20.Which of these is measured in volts (V)? (a) the flow of charge (b) resistance (c) power (d) voltage
21. 21.True or false: the flow of charge is measured in watts (W). (a) False (b) True
22. 22.📏 How many kilo-ohms (kΩ) is 300 Ω? =
23. 23.True or false: current is measured in amperes (A). (a) False (b) True
24. 24.True or false: the push of a cell is measured in ohms (Ω). (a) False (b) True
25. 25.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 100 (b) 1024 (c) 1000 (d) 10
26. 26.📏 How many amperes (A) is 2400 mA? =
27. 27.📏 In the water-pipe picture of a circuit, voltage is like … (a) the water tank lid (b) the pipe colour (c) the water pressure (d) the tap handle
28. 28.📏 How many amperes (A) is 1760 mA? =
29. 29.True or false: the voltmeter measures current. (a) True (b) False
30. 30.Which of these is measured in watts (W)? (a) power (b) current (c) how much a part resists (d) the push of a cell
31. 31.True or false: the ammeter is joined in series. (a) False (b) True
32. 32.📏 How many milliamperes (mA) is 2.36 A?
33. 33.📏 How many kilowatts (kW) is 1500 W? =
34. 34.📏 How many amperes (A) is 2790 mA? =
35. 35.Which of these is measured in amperes (A)? (a) the flow of charge (b) voltage (c) energy used each second (d) resistance
36. 36.True or false: the flow of charge is measured in ohms (Ω). (a) False (b) True
37. 37.📏 How many watts (W) is 3.2 kW?
38. 38.True or false: the voltmeter measures voltage. (a) False (b) True
39. 39.📏 How many amperes (A) is 500 mA? =
40. 40.True or false: the ammeter is joined across a part. (a) True (b) False

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