Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 295 · 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: power is measured in watts (W). (a) False (b) True
2. 2.📏 How many milliamperes (mA) is 1.97 A?
3. 3.Which of these is measured in volts (V)? (a) voltage (b) energy used each second (c) power (d) the flow of charge
4. 4.📏 Voltmeter or ammeter: which one measures voltage? (a) ammeter (b) voltmeter
5. 5.📏 How many ohms (Ω) is 4.3 kΩ?
6. 6.📏 How many amperes (A) is 1390 mA? =
7. 7.📏 How many milliamperes (mA) is 1.15 A?
8. 8.Which of these is measured in ohms (Ω)? (a) the push of a cell (b) how much a part resists (c) power (d) energy used each second
9. 9.True or false: the ammeter is joined in series. (a) False (b) True
10. 10.📏 How many kilowatts (kW) is 1000 W? =
11. 11.📏 How many watts (W) is 0.9 kW?
12. 12.Which of these is measured in ohms (Ω)? (a) voltage (b) resistance (c) energy used each second (d) the flow of charge
13. 13.Which of these is measured in amperes (A)? (a) the push of a cell (b) the flow of charge (c) resistance (d) voltage
14. 14.📏 How many watts (W) is 4.6 kW?
15. 15.True or false: the ammeter is joined across a part. (a) True (b) False
16. 16.📏 How many milliamperes (mA) is 2.23 A?
17. 17.📏 Which unit measures power? (a) ohm (Ω) (b) ampere (A) (c) watt (W) (d) volt (V)
18. 18.📏 Which unit measures the flow of charge? (a) volt (V) (b) ohm (Ω) (c) ampere (A) (d) watt (W)
19. 19.📏 Which unit measures how much a part resists? (a) watt (W) (b) ohm (Ω) (c) ampere (A) (d) volt (V)
20. 20.True or false: the ammeter measures voltage. (a) True (b) False
21. 21.True or false: resistance is measured in amperes (A). (a) False (b) True
22. 22.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 1024 (b) 1000 (c) 10 (d) 100
23. 23.📏 Which unit measures the push of a cell? (a) ampere (A) (b) volt (V) (c) ohm (Ω) (d) watt (W)
24. 24.True or false: the voltmeter measures voltage. (a) False (b) True
25. 25.📏 How many ohms (Ω) is 1 kΩ?
26. 26.📏 How many kilo-ohms (kΩ) is 10000 Ω? =
27. 27.📏 Voltmeter or ammeter: which one is joined in series? (a) voltmeter (b) ammeter
28. 28.Which of these is measured in amperes (A)? (a) power (b) voltage (c) energy used each second (d) current
29. 29.True or false: voltage is measured in watts (W). (a) True (b) False
30. 30.📏 How many watts (W) is 0.1 kW?
31. 31.📏 How many watts (W) is 4.4 kW?
32. 32.True or false: the voltmeter is joined across a part. (a) False (b) True
33. 33.True or false: the flow of charge is measured in watts (W). (a) False (b) True
34. 34.📏 In the water-pipe picture of a circuit, resistance is like … (a) the flow of water (b) the water pressure (c) a bigger tank (d) a narrow pipe
35. 35.📏 How many ohms (Ω) is 6.4 kΩ?
36. 36.📏 How many milliamperes (mA) is 0.93 A?
37. 37.True or false: current is measured in amperes (A). (a) False (b) True
38. 38.True or false: the push of a cell is measured in amperes (A). (a) True (b) False
39. 39.📏 How many amperes (A) is 650 mA? =
40. 40.📏 How many milliamperes (mA) is 2.61 A?

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