Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 342 · 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 volts (V)? (a) energy used each second (b) voltage (c) power (d) current
2. 2.📏 How many milliamperes (mA) make 1 ampere? (a) 60 (b) 100 (c) 10 (d) 1000
3. 3.📏 Which unit measures resistance? (a) ampere (A) (b) watt (W) (c) volt (V) (d) ohm (Ω)
4. 4.📏 Which unit measures energy used each second? (a) watt (W) (b) ohm (Ω) (c) volt (V) (d) ampere (A)
5. 5.📏 Voltmeter or ammeter: which one is joined across a part? (a) ammeter (b) voltmeter
6. 6.True or false: resistance is measured in ohms (Ω). (a) False (b) True
7. 7.📏 Which unit measures power? (a) ohm (Ω) (b) volt (V) (c) ampere (A) (d) watt (W)
8. 8.📏 Which unit measures current? (a) watt (W) (b) ohm (Ω) (c) ampere (A) (d) volt (V)
9. 9.Which of these is measured in amperes (A)? (a) energy used each second (b) how much a part resists (c) voltage (d) the flow of charge
10. 10.True or false: the flow of charge is measured in watts (W). (a) False (b) True
11. 11.True or false: power is measured in watts (W). (a) False (b) True
12. 12.📏 In the water-pipe picture of a circuit, resistance is like … (a) the water pressure (b) the flow of water (c) a bigger tank (d) a narrow pipe
13. 13.True or false: how much a part resists is measured in watts (W). (a) True (b) False
14. 14.📏 How many kilo-ohms (kΩ) is 6500 Ω? =
15. 15.True or false: the ammeter measures current. (a) True (b) False
16. 16.📏 How many kilo-ohms (kΩ) is 6800 Ω? =
17. 17.📏 Voltmeter or ammeter: which one is joined in series? (a) voltmeter (b) ammeter
18. 18.True or false: current is measured in watts (W). (a) False (b) True
19. 19.True or false: the flow of charge is measured in ohms (Ω). (a) False (b) True
20. 20.True or false: the push of a cell is measured in amperes (A). (a) False (b) True
21. 21.📏 How many ohms (Ω) is 1.3 kΩ?
22. 22.Which of these is measured in watts (W)? (a) resistance (b) energy used each second (c) voltage (d) the flow of charge
23. 23.Which of these is measured in ohms (Ω)? (a) power (b) resistance (c) the push of a cell (d) voltage
24. 24.📏 How many watts (W) is 2.7 kW?
25. 25.📏 Voltmeter or ammeter: which one measures voltage? (a) ammeter (b) voltmeter
26. 26.📏 How many kilo-ohms (kΩ) is 1600 Ω? =
27. 27.True or false: the voltmeter measures voltage. (a) False (b) True
28. 28.📏 Which unit measures how much a part resists? (a) ampere (A) (b) ohm (Ω) (c) watt (W) (d) volt (V)
29. 29.📏 How many amperes (A) is 2700 mA? =
30. 30.📏 Which unit measures voltage? (a) ampere (A) (b) ohm (Ω) (c) volt (V) (d) watt (W)
31. 31.True or false: how much a part resists is measured in ohms (Ω). (a) True (b) False
32. 32.True or false: the ammeter is joined across a part. (a) False (b) True
33. 33.True or false: the voltmeter measures current. (a) False (b) True
34. 34.True or false: resistance is measured in volts (V). (a) False (b) True
35. 35.Which of these is measured in watts (W)? (a) the flow of charge (b) voltage (c) current (d) power
36. 36.📏 How many amperes (A) is 400 mA? =
37. 37.True or false: voltage is measured in watts (W). (a) False (b) True
38. 38.True or false: the ammeter measures voltage. (a) True (b) False
39. 39.📏 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
40. 40.Which of these is measured in amperes (A)? (a) current (b) resistance (c) the push of a cell (d) energy used each second

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