Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 581 · 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: the ammeter measures voltage. (a) True (b) False
2. 2.True or false: energy used each second is measured in amperes (A). (a) False (b) True
3. 3.📏 How many kilo-ohms (kΩ) is 9500 Ω? =
4. 4.Which of these is measured in amperes (A)? (a) resistance (b) how much a part resists (c) power (d) current
5. 5.📏 Which unit measures resistance? (a) ampere (A) (b) watt (W) (c) ohm (Ω) (d) volt (V)
6. 6.📏 How many kilowatts (kW) is 50 W? =
7. 7.📏 How many milliamperes (mA) make 1 ampere? (a) 10 (b) 60 (c) 1000 (d) 100
8. 8.True or false: energy used each second is measured in watts (W). (a) True (b) False
9. 9.📏 How many watts (W) is 0.2 kW?
10. 10.Which of these is measured in ohms (Ω)? (a) energy used each second (b) current (c) the push of a cell (d) resistance
11. 11.Which of these is measured in volts (V)? (a) energy used each second (b) the push of a cell (c) current (d) the flow of charge
12. 12.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 100 (b) 10 (c) 1000 (d) 1024
13. 13.📏 Which unit measures energy used each second? (a) watt (W) (b) volt (V) (c) ampere (A) (d) ohm (Ω)
14. 14.📏 How many kilowatts (kW) is 4650 W? =
15. 15.True or false: the voltmeter is joined in series. (a) True (b) False
16. 16.📏 Which unit measures power? (a) ampere (A) (b) ohm (Ω) (c) volt (V) (d) watt (W)
17. 17.📏 How many milliamperes (mA) is 1.23 A?
18. 18.📏 How many ohms (Ω) is 7 kΩ?
19. 19.📏 How many amperes (A) is 420 mA? =
20. 20.📏 How many kilo-ohms (kΩ) is 1200 Ω? =
21. 21.📏 How many amperes (A) is 1160 mA? =
22. 22.📏 In the water-pipe picture of a circuit, current is like … (a) the pipe colour (b) a narrow pipe (c) the water pressure (d) the flow of water
23. 23.📏 In the water-pipe picture of a circuit, resistance is like … (a) the flow of water (b) the water pressure (c) a narrow pipe (d) a bigger tank
24. 24.True or false: current is measured in amperes (A). (a) True (b) False
25. 25.📏 How many ohms (Ω) is 6.5 kΩ?
26. 26.True or false: how much a part resists is measured in ohms (Ω). (a) False (b) True
27. 27.📏 How many amperes (A) is 1690 mA? =
28. 28.📏 Voltmeter or ammeter: which one measures voltage? (a) voltmeter (b) ammeter
29. 29.📏 Which unit measures voltage? (a) volt (V) (b) watt (W) (c) ohm (Ω) (d) ampere (A)
30. 30.📏 Which unit measures the push of a cell? (a) volt (V) (b) ohm (Ω) (c) ampere (A) (d) watt (W)
31. 31.📏 How many milliamperes (mA) is 2.75 A?
32. 32.True or false: the flow of charge is measured in ohms (Ω). (a) False (b) True
33. 33.📏 Voltmeter or ammeter: which one is joined in series? (a) voltmeter (b) ammeter
34. 34.True or false: power is measured in volts (V). (a) True (b) False
35. 35.📏 Which unit measures the flow of charge? (a) volt (V) (b) watt (W) (c) ampere (A) (d) ohm (Ω)
36. 36.True or false: the push of a cell is measured in volts (V). (a) False (b) True
37. 37.📏 How many kilowatts (kW) is 1750 W? =
38. 38.📏 How many amperes (A) is 2920 mA? =
39. 39.📏 Which unit measures how much a part resists? (a) ohm (Ω) (b) watt (W) (c) volt (V) (d) ampere (A)
40. 40.📏 How many watts (W) is 0.8 kW?

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