Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 523 · 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 unit measures power? (a) ohm (Ω) (b) volt (V) (c) ampere (A) (d) watt (W)
2. 2.True or false: the flow of charge is measured in volts (V). (a) False (b) True
3. 3.📏 How many milliamperes (mA) is 2 A?
4. 4.Which of these is measured in volts (V)? (a) power (b) the push of a cell (c) energy used each second (d) the flow of charge
5. 5.📏 How many milliamperes (mA) make 1 ampere? (a) 60 (b) 10 (c) 100 (d) 1000
6. 6.True or false: current is measured in ohms (Ω). (a) True (b) False
7. 7.Which of these is measured in ohms (Ω)? (a) voltage (b) energy used each second (c) power (d) resistance
8. 8.📏 Which unit measures voltage? (a) watt (W) (b) volt (V) (c) ohm (Ω) (d) ampere (A)
9. 9.Which of these is measured in amperes (A)? (a) energy used each second (b) current (c) voltage (d) how much a part resists
10. 10.True or false: the voltmeter is joined in series. (a) True (b) False
11. 11.📏 How many milliamperes (mA) is 0.53 A?
12. 12.📏 How many watts (W) is 3.9 kW?
13. 13.📏 Which unit measures the flow of charge? (a) watt (W) (b) ohm (Ω) (c) volt (V) (d) ampere (A)
14. 14.True or false: the push of a cell is measured in volts (V). (a) True (b) False
15. 15.📏 In the water-pipe picture of a circuit, resistance is like … (a) the water pressure (b) a narrow pipe (c) the flow of water (d) a bigger tank
16. 16.📏 How many amperes (A) is 350 mA? =
17. 17.Which of these is measured in watts (W)? (a) how much a part resists (b) the push of a cell (c) the flow of charge (d) power
18. 18.📏 How many milliamperes (mA) is 0.16 A?
19. 19.📏 How many kilo-ohms (kΩ) is 2000 Ω? =
20. 20.True or false: the ammeter is joined in series. (a) True (b) False
21. 21.True or false: voltage is measured in volts (V). (a) False (b) True
22. 22.📏 Which unit measures resistance? (a) watt (W) (b) ohm (Ω) (c) ampere (A) (d) volt (V)
23. 23.Which of these is measured in amperes (A)? (a) power (b) the push of a cell (c) the flow of charge (d) voltage
24. 24.📏 Which unit measures energy used each second? (a) ampere (A) (b) watt (W) (c) volt (V) (d) ohm (Ω)
25. 25.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 10 (b) 100 (c) 1000 (d) 1024
26. 26.True or false: voltage is measured in amperes (A). (a) True (b) False
27. 27.📏 Voltmeter or ammeter: which one is joined in series? (a) voltmeter (b) ammeter
28. 28.True or false: power is measured in watts (W). (a) False (b) True
29. 29.📏 Voltmeter or ammeter: which one measures voltage? (a) ammeter (b) voltmeter
30. 30.📏 How many amperes (A) is 1420 mA? =
31. 31.True or false: the ammeter is joined across a part. (a) False (b) True
32. 32.True or false: energy used each second is measured in watts (W). (a) False (b) True
33. 33.📏 How many amperes (A) is 1340 mA? =
34. 34.📏 How many kilowatts (kW) is 2700 W? =
35. 35.📏 How many ohms (Ω) is 1.8 kΩ?
36. 36.📏 How many watts (W) is 4.7 kW?
37. 37.📏 How many milliamperes (mA) is 2.87 A?
38. 38.True or false: current is measured in amperes (A). (a) True (b) False
39. 39.True or false: the flow of charge is measured in amperes (A). (a) True (b) False
40. 40.📏 How many ohms (Ω) is 9.6 kΩ?

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