Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 113 · 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.📏 How many kilo-ohms (kΩ) is 7700 Ω? =
2. 2.True or false: the voltmeter is joined in series. (a) False (b) True
3. 3.📏 How many kilo-ohms (kΩ) is 5700 Ω? =
4. 4.True or false: resistance is measured in amperes (A). (a) False (b) True
5. 5.📏 Voltmeter or ammeter: which one is joined across a part? (a) voltmeter (b) ammeter
6. 6.True or false: voltage is measured in watts (W). (a) True (b) False
7. 7.Which of these is measured in watts (W)? (a) voltage (b) energy used each second (c) current (d) how much a part resists
8. 8.📏 How many watts (W) is 5 kW?
9. 9.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 1000 (b) 10 (c) 100 (d) 1024
10. 10.📏 How many kilo-ohms (kΩ) is 100 Ω? =
11. 11.📏 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
12. 12.📏 Which unit measures the flow of charge? (a) watt (W) (b) volt (V) (c) ampere (A) (d) ohm (Ω)
13. 13.📏 Voltmeter or ammeter: which one measures current? (a) ammeter (b) voltmeter
14. 14.True or false: the voltmeter is joined across a part. (a) False (b) True
15. 15.Which of these is measured in volts (V)? (a) the flow of charge (b) how much a part resists (c) energy used each second (d) voltage
16. 16.📏 Which unit measures voltage? (a) ohm (Ω) (b) watt (W) (c) ampere (A) (d) volt (V)
17. 17.True or false: the ammeter measures current. (a) True (b) False
18. 18.True or false: the ammeter is joined across a part. (a) True (b) False
19. 19.📏 How many amperes (A) is 1480 mA? =
20. 20.Which of these is measured in amperes (A)? (a) resistance (b) voltage (c) current (d) how much a part resists
21. 21.📏 How many watts (W) is 0.9 kW?
22. 22.📏 How many watts (W) is 3.2 kW?
23. 23.📏 Voltmeter or ammeter: which one measures voltage? (a) ammeter (b) voltmeter
24. 24.True or false: voltage is measured in amperes (A). (a) True (b) False
25. 25.📏 In the water-pipe picture of a circuit, resistance is like … (a) the flow of water (b) the water pressure (c) a narrow pipe (d) a bigger tank
26. 26.📏 How many kilowatts (kW) is 3500 W? =
27. 27.Which of these is measured in ohms (Ω)? (a) how much a part resists (b) current (c) the push of a cell (d) the flow of charge
28. 28.📏 How many amperes (A) is 120 mA? =
29. 29.True or false: power is measured in ohms (Ω). (a) False (b) True
30. 30.📏 How many kilo-ohms (kΩ) is 200 Ω? =
31. 31.True or false: the push of a cell is measured in volts (V). (a) False (b) True
32. 32.📏 Which unit measures resistance? (a) volt (V) (b) ampere (A) (c) watt (W) (d) ohm (Ω)
33. 33.True or false: the ammeter is joined in series. (a) True (b) False
34. 34.📏 How many milliamperes (mA) is 2.69 A?
35. 35.True or false: the ammeter measures voltage. (a) True (b) False
36. 36.True or false: power is measured in watts (W). (a) False (b) True
37. 37.Which of these is measured in watts (W)? (a) current (b) the push of a cell (c) how much a part resists (d) power
38. 38.📏 Which unit measures energy used each second? (a) ampere (A) (b) volt (V) (c) ohm (Ω) (d) watt (W)
39. 39.True or false: energy used each second is measured in volts (V). (a) False (b) True
40. 40.Which of these is measured in ohms (Ω)? (a) current (b) energy used each second (c) the flow of charge (d) resistance

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