Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 623 · 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.📏 In the water-pipe picture of a circuit, resistance is like … (a) a bigger tank (b) a narrow pipe (c) the flow of water (d) the water pressure
2. 2.📏 How many watts (W) is 1.5 kW?
3. 3.📏 Which unit measures energy used each second? (a) watt (W) (b) volt (V) (c) ohm (Ω) (d) ampere (A)
4. 4.True or false: the voltmeter is joined in series. (a) False (b) True
5. 5.📏 Which unit measures voltage? (a) watt (W) (b) ohm (Ω) (c) volt (V) (d) ampere (A)
6. 6.Which of these is measured in amperes (A)? (a) energy used each second (b) the push of a cell (c) voltage (d) current
7. 7.📏 How many watts (W) is 1.6 kW?
8. 8.📏 How many ohms (Ω) is 4.2 kΩ?
9. 9.📏 Which unit measures current? (a) ohm (Ω) (b) volt (V) (c) ampere (A) (d) watt (W)
10. 10.📏 How many milliamperes (mA) is 0.42 A?
11. 11.📏 Which unit measures the push of a cell? (a) ampere (A) (b) volt (V) (c) watt (W) (d) ohm (Ω)
12. 12.📏 How many milliamperes (mA) is 1.99 A?
13. 13.True or false: the ammeter is joined in series. (a) True (b) False
14. 14.📏 How many amperes (A) is 1380 mA? =
15. 15.Which of these is measured in ohms (Ω)? (a) energy used each second (b) power (c) voltage (d) how much a part resists
16. 16.📏 How many amperes (A) is 1550 mA? =
17. 17.True or false: voltage is measured in watts (W). (a) True (b) False
18. 18.📏 How many milliamperes (mA) is 2.73 A?
19. 19.Which of these is measured in volts (V)? (a) voltage (b) current (c) how much a part resists (d) energy used each second
20. 20.Which of these is measured in ohms (Ω)? (a) voltage (b) resistance (c) current (d) the flow of charge
21. 21.📏 How many milliamperes (mA) is 0.15 A?
22. 22.📏 Voltmeter or ammeter: which one is joined across a part? (a) voltmeter (b) ammeter
23. 23.Which of these is measured in watts (W)? (a) power (b) the push of a cell (c) the flow of charge (d) how much a part resists
24. 24.📏 How many kilo-ohms (kΩ) is 4200 Ω? =
25. 25.True or false: the push of a cell is measured in amperes (A). (a) False (b) True
26. 26.📏 How many milliamperes (mA) make 1 ampere? (a) 1000 (b) 60 (c) 10 (d) 100
27. 27.📏 Which unit measures the flow of charge? (a) ohm (Ω) (b) ampere (A) (c) watt (W) (d) volt (V)
28. 28.True or false: the ammeter measures voltage. (a) False (b) True
29. 29.Which of these is measured in amperes (A)? (a) how much a part resists (b) resistance (c) the flow of charge (d) voltage
30. 30.Which of these is measured in volts (V)? (a) the push of a cell (b) the flow of charge (c) energy used each second (d) current
31. 31.📏 How many amperes (A) is 100 mA? =
32. 32.📏 Voltmeter or ammeter: which one measures voltage? (a) voltmeter (b) ammeter
33. 33.📏 How many ohms (Ω) is 8.6 kΩ?
34. 34.📏 Which unit measures power? (a) watt (W) (b) ampere (A) (c) volt (V) (d) ohm (Ω)
35. 35.📏 Which unit measures resistance? (a) ampere (A) (b) ohm (Ω) (c) volt (V) (d) watt (W)
36. 36.📏 Voltmeter or ammeter: which one measures current? (a) voltmeter (b) ammeter
37. 37.True or false: the ammeter measures current. (a) False (b) True
38. 38.📏 Voltmeter or ammeter: which one is joined in series? (a) voltmeter (b) ammeter
39. 39.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 1000 (b) 100 (c) 1024 (d) 10
40. 40.📏 How many ohms (Ω) is 6.3 kΩ?

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