Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 720 · 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 watts (W)? (a) the flow of charge (b) the push of a cell (c) current (d) energy used each second
2. 2.📏 Voltmeter or ammeter: which one measures voltage? (a) ammeter (b) voltmeter
3. 3.📏 How many ohms (Ω) is 3 kΩ?
4. 4.True or false: resistance is measured in amperes (A). (a) True (b) False
5. 5.📏 In the water-pipe picture of a circuit, current is like … (a) the water pressure (b) a narrow pipe (c) the flow of water (d) the pipe colour
6. 6.📏 How many kilowatts (kW) is 3600 W? =
7. 7.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 10 (b) 1024 (c) 1000 (d) 100
8. 8.📏 Which unit measures the push of a cell? (a) ohm (Ω) (b) watt (W) (c) volt (V) (d) ampere (A)
9. 9.True or false: the ammeter measures voltage. (a) False (b) True
10. 10.📏 Voltmeter or ammeter: which one measures current? (a) voltmeter (b) ammeter
11. 11.📏 Which unit measures power? (a) ampere (A) (b) watt (W) (c) ohm (Ω) (d) volt (V)
12. 12.Which of these is measured in volts (V)? (a) voltage (b) energy used each second (c) resistance (d) current
13. 13.📏 How many milliamperes (mA) make 1 ampere? (a) 60 (b) 10 (c) 100 (d) 1000
14. 14.📏 How many kilo-ohms (kΩ) is 8000 Ω? =
15. 15.📏 How many amperes (A) is 340 mA? =
16. 16.Which of these is measured in ohms (Ω)? (a) resistance (b) energy used each second (c) the push of a cell (d) power
17. 17.True or false: resistance is measured in volts (V). (a) False (b) True
18. 18.📏 How many amperes (A) is 170 mA? =
19. 19.📏 Which unit measures resistance? (a) ohm (Ω) (b) volt (V) (c) watt (W) (d) ampere (A)
20. 20.📏 How many amperes (A) is 2530 mA? =
21. 21.True or false: the voltmeter measures current. (a) True (b) False
22. 22.True or false: the voltmeter is joined in series. (a) True (b) False
23. 23.📏 Which unit measures current? (a) volt (V) (b) watt (W) (c) ampere (A) (d) ohm (Ω)
24. 24.True or false: power is measured in watts (W). (a) False (b) True
25. 25.Which of these is measured in amperes (A)? (a) energy used each second (b) the flow of charge (c) voltage (d) power
26. 26.📏 Voltmeter or ammeter: which one is joined across a part? (a) voltmeter (b) ammeter
27. 27.📏 How many kilo-ohms (kΩ) is 5500 Ω? =
28. 28.True or false: the push of a cell is measured in watts (W). (a) False (b) True
29. 29.📏 How many watts (W) is 0.7 kW?
30. 30.Which of these is measured in ohms (Ω)? (a) energy used each second (b) voltage (c) the push of a cell (d) how much a part resists
31. 31.📏 How many milliamperes (mA) is 1.65 A?
32. 32.📏 In the water-pipe picture of a circuit, resistance is like … (a) the flow of water (b) a narrow pipe (c) a bigger tank (d) the water pressure
33. 33.📏 How many milliamperes (mA) is 2.13 A?
34. 34.📏 How many kilo-ohms (kΩ) is 8200 Ω? =
35. 35.📏 Voltmeter or ammeter: which one is joined in series? (a) ammeter (b) voltmeter
36. 36.📏 How many milliamperes (mA) is 0.12 A?
37. 37.📏 How many ohms (Ω) is 2.7 kΩ?
38. 38.📏 How many watts (W) is 4.1 kW?
39. 39.📏 How many amperes (A) is 1000 mA? =
40. 40.Which of these is measured in volts (V)? (a) the push of a cell (b) energy used each second (c) resistance (d) how much a part resists

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