Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 451 · 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.📏 Voltmeter or ammeter: which one measures voltage? (a) ammeter (b) voltmeter
2. 2.True or false: the voltmeter measures current. (a) False (b) True
3. 3.📏 How many ohms (Ω) is 1.4 kΩ?
4. 4.Which of these is measured in ohms (Ω)? (a) resistance (b) power (c) energy used each second (d) current
5. 5.📏 Which unit measures how much a part resists? (a) ampere (A) (b) volt (V) (c) ohm (Ω) (d) watt (W)
6. 6.📏 How many watts (W) is 0.7 kW?
7. 7.📏 In the water-pipe picture of a circuit, voltage is like … (a) the pipe colour (b) the tap handle (c) the water pressure (d) the water tank lid
8. 8.True or false: the push of a cell is measured in watts (W). (a) False (b) True
9. 9.📏 How many amperes (A) is 2310 mA? =
10. 10.📏 Which unit measures current? (a) watt (W) (b) volt (V) (c) ampere (A) (d) ohm (Ω)
11. 11.📏 How many kilowatts (kW) is 500 W? =
12. 12.📏 Which unit measures voltage? (a) ohm (Ω) (b) watt (W) (c) ampere (A) (d) volt (V)
13. 13.📏 Which unit measures power? (a) volt (V) (b) ampere (A) (c) ohm (Ω) (d) watt (W)
14. 14.📏 How many milliamperes (mA) make 1 ampere? (a) 1000 (b) 60 (c) 100 (d) 10
15. 15.True or false: power is measured in ohms (Ω). (a) False (b) True
16. 16.Which of these is measured in ohms (Ω)? (a) how much a part resists (b) the flow of charge (c) energy used each second (d) the push of a cell
17. 17.📏 Which unit measures the flow of charge? (a) watt (W) (b) volt (V) (c) ampere (A) (d) ohm (Ω)
18. 18.📏 How many watts (W) is 3 kW?
19. 19.📏 How many kilowatts (kW) is 2250 W? =
20. 20.True or false: the voltmeter is joined in series. (a) False (b) True
21. 21.True or false: the flow of charge is measured in volts (V). (a) False (b) True
22. 22.📏 How many watts (W) is 3.5 kW?
23. 23.Which of these is measured in watts (W)? (a) how much a part resists (b) energy used each second (c) resistance (d) voltage
24. 24.📏 Which unit measures the push of a cell? (a) watt (W) (b) volt (V) (c) ampere (A) (d) ohm (Ω)
25. 25.📏 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
26. 26.📏 How many amperes (A) is 1650 mA? =
27. 27.True or false: energy used each second is measured in volts (V). (a) False (b) True
28. 28.True or false: resistance is measured in ohms (Ω). (a) True (b) False
29. 29.Which of these is measured in volts (V)? (a) power (b) how much a part resists (c) current (d) the push of a cell
30. 30.📏 How many kilo-ohms (kΩ) is 1700 Ω? =
31. 31.📏 How many amperes (A) is 1390 mA? =
32. 32.True or false: how much a part resists is measured in ohms (Ω). (a) False (b) True
33. 33.📏 In the water-pipe picture of a circuit, current is like … (a) the water pressure (b) the flow of water (c) the pipe colour (d) a narrow pipe
34. 34.📏 How many kilo-ohms (kΩ) is 9700 Ω? =
35. 35.True or false: the flow of charge is measured in ohms (Ω). (a) True (b) False
36. 36.📏 How many milliamperes (mA) is 1.79 A?
37. 37.True or false: the ammeter measures current. (a) True (b) False
38. 38.📏 How many amperes (A) is 300 mA? =
39. 39.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 10 (b) 100 (c) 1000 (d) 1024
40. 40.Which of these is measured in amperes (A)? (a) power (b) the flow of charge (c) resistance (d) energy used each second

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