Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 687 · 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 of these is measured in ohms (Ω)? (a) current (b) power (c) resistance (d) energy used each second
2. 2.📏 How many ohms (Ω) is 5.9 kΩ?
3. 3.📏 Which unit measures power? (a) volt (V) (b) ampere (A) (c) watt (W) (d) ohm (Ω)
4. 4.📏 How many milliamperes (mA) is 2 A?
5. 5.True or false: power is measured in volts (V). (a) True (b) False
6. 6.📏 Which unit measures voltage? (a) ohm (Ω) (b) ampere (A) (c) volt (V) (d) watt (W)
7. 7.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 1024 (b) 1000 (c) 100 (d) 10
8. 8.📏 Voltmeter or ammeter: which one is joined in series? (a) voltmeter (b) ammeter
9. 9.📏 Which unit measures the push of a cell? (a) watt (W) (b) volt (V) (c) ohm (Ω) (d) ampere (A)
10. 10.📏 Which unit measures energy used each second? (a) ampere (A) (b) ohm (Ω) (c) watt (W) (d) volt (V)
11. 11.True or false: the voltmeter measures current. (a) False (b) True
12. 12.📏 How many kilo-ohms (kΩ) is 2200 Ω? =
13. 13.📏 Which unit measures the flow of charge? (a) ohm (Ω) (b) volt (V) (c) ampere (A) (d) watt (W)
14. 14.True or false: the ammeter is joined in series. (a) False (b) True
15. 15.📏 How many milliamperes (mA) is 0.74 A?
16. 16.True or false: how much a part resists is measured in volts (V). (a) False (b) True
17. 17.📏 How many milliamperes (mA) is 1.58 A?
18. 18.True or false: voltage is measured in amperes (A). (a) False (b) True
19. 19.📏 How many milliamperes (mA) is 2.49 A?
20. 20.📏 How many watts (W) is 1.5 kW?
21. 21.Which of these is measured in ohms (Ω)? (a) voltage (b) energy used each second (c) the flow of charge (d) how much a part resists
22. 22.True or false: energy used each second is measured in ohms (Ω). (a) True (b) False
23. 23.📏 How many ohms (Ω) is 1.9 kΩ?
24. 24.Which of these is measured in amperes (A)? (a) energy used each second (b) voltage (c) how much a part resists (d) current
25. 25.📏 Which unit measures resistance? (a) watt (W) (b) volt (V) (c) ampere (A) (d) ohm (Ω)
26. 26.📏 In the water-pipe picture of a circuit, voltage is like … (a) the tap handle (b) the water tank lid (c) the pipe colour (d) the water pressure
27. 27.📏 In the water-pipe picture of a circuit, current is like … (a) the water pressure (b) the flow of water (c) a narrow pipe (d) the pipe colour
28. 28.📏 How many watts (W) is 2.3 kW?
29. 29.📏 How many amperes (A) is 600 mA? =
30. 30.📏 How many milliamperes (mA) make 1 ampere? (a) 10 (b) 1000 (c) 100 (d) 60
31. 31.True or false: the push of a cell is measured in ohms (Ω). (a) True (b) False
32. 32.📏 How many milliamperes (mA) is 0.35 A?
33. 33.📏 How many kilo-ohms (kΩ) is 2500 Ω? =
34. 34.Which of these is measured in watts (W)? (a) the push of a cell (b) resistance (c) how much a part resists (d) energy used each second
35. 35.📏 In the water-pipe picture of a circuit, resistance is like … (a) a narrow pipe (b) the flow of water (c) a bigger tank (d) the water pressure
36. 36.True or false: the flow of charge is measured in amperes (A). (a) True (b) False
37. 37.📏 Voltmeter or ammeter: which one measures voltage? (a) voltmeter (b) ammeter
38. 38.True or false: the voltmeter is joined in series. (a) False (b) True
39. 39.📏 Which unit measures current? (a) ohm (Ω) (b) ampere (A) (c) watt (W) (d) volt (V)
40. 40.📏 How many watts (W) is 2.9 kW?

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