Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 781 · 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 amperes (A) is 2630 mA? =
2. 2.📏 Voltmeter or ammeter: which one is joined across a part? (a) ammeter (b) voltmeter
3. 3.📏 In the water-pipe picture of a circuit, current is like … (a) the flow of water (b) the pipe colour (c) a narrow pipe (d) the water pressure
4. 4.📏 Which unit measures energy used each second? (a) ampere (A) (b) watt (W) (c) ohm (Ω) (d) volt (V)
5. 5.True or false: the voltmeter is joined in series. (a) False (b) True
6. 6.True or false: how much a part resists is measured in ohms (Ω). (a) False (b) True
7. 7.True or false: the push of a cell is measured in volts (V). (a) False (b) True
8. 8.Which of these is measured in volts (V)? (a) current (b) the flow of charge (c) power (d) voltage
9. 9.True or false: the push of a cell is measured in amperes (A). (a) False (b) True
10. 10.True or false: how much a part resists is measured in amperes (A). (a) True (b) False
11. 11.True or false: power is measured in volts (V). (a) False (b) True
12. 12.📏 How many kilowatts (kW) is 1200 W? =
13. 13.Which of these is measured in watts (W)? (a) resistance (b) the push of a cell (c) energy used each second (d) how much a part resists
14. 14.📏 How many kilowatts (kW) is 4900 W? =
15. 15.Which of these is measured in ohms (Ω)? (a) voltage (b) resistance (c) the push of a cell (d) energy used each second
16. 16.📏 How many kilowatts (kW) is 3000 W? =
17. 17.📏 Which unit measures the flow of charge? (a) ohm (Ω) (b) watt (W) (c) ampere (A) (d) volt (V)
18. 18.True or false: the voltmeter is joined across a part. (a) False (b) True
19. 19.Which of these is measured in volts (V)? (a) the push of a cell (b) current (c) power (d) the flow of charge
20. 20.📏 Voltmeter or ammeter: which one measures voltage? (a) voltmeter (b) ammeter
21. 21.Which of these is measured in amperes (A)? (a) voltage (b) the push of a cell (c) resistance (d) current
22. 22.True or false: the ammeter measures current. (a) True (b) False
23. 23.📏 In the water-pipe picture of a circuit, resistance is like … (a) a bigger tank (b) the water pressure (c) the flow of water (d) a narrow pipe
24. 24.📏 How many kilowatts (kW) is 2200 W? =
25. 25.📏 How many kilo-ohms (kΩ) is 500 Ω? =
26. 26.📏 How many kilo-ohms (kΩ) is 5500 Ω? =
27. 27.📏 How many milliamperes (mA) is 0.81 A?
28. 28.True or false: the ammeter is joined across a part. (a) True (b) False
29. 29.Which of these is measured in ohms (Ω)? (a) how much a part resists (b) voltage (c) energy used each second (d) the push of a cell
30. 30.📏 How many amperes (A) is 2080 mA? =
31. 31.📏 Which unit measures voltage? (a) watt (W) (b) ampere (A) (c) ohm (Ω) (d) volt (V)
32. 32.📏 Voltmeter or ammeter: which one is joined in series? (a) voltmeter (b) ammeter
33. 33.📏 Which unit measures power? (a) volt (V) (b) ohm (Ω) (c) watt (W) (d) ampere (A)
34. 34.True or false: the ammeter is joined in series. (a) False (b) True
35. 35.📏 How many kilowatts (kW) is 1500 W? =
36. 36.📏 How many kilo-ohms (kΩ) is 2200 Ω? =
37. 37.📏 How many ohms (Ω) is 6.6 kΩ?
38. 38.📏 Voltmeter or ammeter: which one measures current? (a) voltmeter (b) ammeter
39. 39.📏 How many milliamperes (mA) make 1 ampere? (a) 10 (b) 100 (c) 1000 (d) 60
40. 40.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 100 (b) 10 (c) 1024 (d) 1000

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