Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 325 · 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.📏 How many milliamperes (mA) make 1 ampere? (a) 10 (b) 60 (c) 1000 (d) 100
2. 2.📏 Voltmeter or ammeter: which one is joined in series? (a) voltmeter (b) ammeter
3. 3.📏 How many ohms (Ω) is 9.6 kΩ?
4. 4.📏 How many amperes (A) is 920 mA? =
5. 5.📏 How many kilo-ohms (kΩ) is 400 Ω? =
6. 6.📏 Which unit measures voltage? (a) ampere (A) (b) watt (W) (c) ohm (Ω) (d) volt (V)
7. 7.📏 Which unit measures the flow of charge? (a) volt (V) (b) ohm (Ω) (c) ampere (A) (d) watt (W)
8. 8.📏 How many amperes (A) is 1870 mA? =
9. 9.True or false: the voltmeter measures voltage. (a) False (b) True
10. 10.📏 How many amperes (A) is 1110 mA? =
11. 11.📏 In the water-pipe picture of a circuit, resistance is like … (a) the water pressure (b) the flow of water (c) a narrow pipe (d) a bigger tank
12. 12.📏 Which unit measures the push of a cell? (a) watt (W) (b) volt (V) (c) ampere (A) (d) ohm (Ω)
13. 13.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 1024 (b) 1000 (c) 100 (d) 10
14. 14.Which of these is measured in ohms (Ω)? (a) the push of a cell (b) the flow of charge (c) how much a part resists (d) voltage
15. 15.True or false: resistance is measured in watts (W). (a) False (b) True
16. 16.Which of these is measured in amperes (A)? (a) voltage (b) how much a part resists (c) current (d) energy used each second
17. 17.Which of these is measured in volts (V)? (a) resistance (b) the flow of charge (c) the push of a cell (d) how much a part resists
18. 18.True or false: energy used each second is measured in watts (W). (a) False (b) True
19. 19.True or false: voltage is measured in volts (V). (a) False (b) True
20. 20.Which of these is measured in volts (V)? (a) current (b) voltage (c) resistance (d) energy used each second
21. 21.📏 How many watts (W) is 4.4 kW?
22. 22.📏 How many kilo-ohms (kΩ) is 1600 Ω? =
23. 23.True or false: current is measured in amperes (A). (a) True (b) False
24. 24.📏 How many milliamperes (mA) is 2.98 A?
25. 25.📏 Which unit measures energy used each second? (a) ohm (Ω) (b) ampere (A) (c) watt (W) (d) volt (V)
26. 26.📏 In the water-pipe picture of a circuit, current is like … (a) a narrow pipe (b) the water pressure (c) the pipe colour (d) the flow of water
27. 27.📏 How many kilowatts (kW) is 2450 W? =
28. 28.True or false: the ammeter is joined across a part. (a) True (b) False
29. 29.📏 How many kilo-ohms (kΩ) is 2400 Ω? =
30. 30.📏 How many ohms (Ω) is 9.8 kΩ?
31. 31.📏 How many amperes (A) is 2590 mA? =
32. 32.📏 How many amperes (A) is 2130 mA? =
33. 33.📏 In the water-pipe picture of a circuit, voltage is like … (a) the pipe colour (b) the water pressure (c) the water tank lid (d) the tap handle
34. 34.True or false: the ammeter measures voltage. (a) True (b) False
35. 35.Which of these is measured in watts (W)? (a) the push of a cell (b) voltage (c) current (d) energy used each second
36. 36.📏 Voltmeter or ammeter: which one measures current? (a) ammeter (b) voltmeter
37. 37.True or false: the push of a cell is measured in volts (V). (a) True (b) False
38. 38.📏 Which unit measures resistance? (a) watt (W) (b) ohm (Ω) (c) volt (V) (d) ampere (A)
39. 39.📏 Voltmeter or ammeter: which one is joined across a part? (a) voltmeter (b) ammeter
40. 40.📏 Voltmeter or ammeter: which one measures voltage? (a) voltmeter (b) ammeter

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