Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 807 · 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: voltage is measured in volts (V). (a) True (b) False
2. 2.📏 In the water-pipe picture of a circuit, voltage is like … (a) the water pressure (b) the tap handle (c) the pipe colour (d) the water tank lid
3. 3.📏 How many milliamperes (mA) is 0.9 A?
4. 4.📏 In the water-pipe picture of a circuit, resistance is like … (a) a narrow pipe (b) the water pressure (c) the flow of water (d) a bigger tank
5. 5.📏 Voltmeter or ammeter: which one is joined in series? (a) voltmeter (b) ammeter
6. 6.📏 Voltmeter or ammeter: which one measures voltage? (a) ammeter (b) voltmeter
7. 7.True or false: the voltmeter measures voltage. (a) False (b) True
8. 8.📏 Which unit measures current? (a) ohm (Ω) (b) volt (V) (c) ampere (A) (d) watt (W)
9. 9.True or false: the flow of charge is measured in volts (V). (a) False (b) True
10. 10.📏 How many amperes (A) is 1150 mA? =
11. 11.📏 How many kilowatts (kW) is 4550 W? =
12. 12.📏 In the water-pipe picture of a circuit, current is like … (a) the flow of water (b) the water pressure (c) a narrow pipe (d) the pipe colour
13. 13.📏 Voltmeter or ammeter: which one is joined across a part? (a) ammeter (b) voltmeter
14. 14.📏 How many amperes (A) is 160 mA? =
15. 15.True or false: the voltmeter is joined in series. (a) True (b) False
16. 16.📏 How many watts (W) is 1.4 kW?
17. 17.True or false: the push of a cell is measured in volts (V). (a) False (b) True
18. 18.📏 Which unit measures power? (a) ampere (A) (b) volt (V) (c) ohm (Ω) (d) watt (W)
19. 19.True or false: energy used each second is measured in volts (V). (a) True (b) False
20. 20.📏 How many ohms (Ω) is 4.3 kΩ?
21. 21.📏 Voltmeter or ammeter: which one measures current? (a) ammeter (b) voltmeter
22. 22.Which of these is measured in ohms (Ω)? (a) the push of a cell (b) energy used each second (c) resistance (d) power
23. 23.📏 How many amperes (A) is 420 mA? =
24. 24.True or false: the ammeter is joined across a part. (a) True (b) False
25. 25.Which of these is measured in watts (W)? (a) resistance (b) power (c) voltage (d) the flow of charge
26. 26.📏 How many kilowatts (kW) is 150 W? =
27. 27.Which of these is measured in volts (V)? (a) energy used each second (b) the flow of charge (c) current (d) voltage
28. 28.📏 How many ohms (Ω) is 7.3 kΩ?
29. 29.📏 How many ohms (Ω) is 8.3 kΩ?
30. 30.📏 How many ohms (Ω) is 8.2 kΩ?
31. 31.Which of these is measured in amperes (A)? (a) energy used each second (b) resistance (c) how much a part resists (d) the flow of charge
32. 32.📏 How many amperes (A) is 1010 mA? =
33. 33.True or false: power is measured in watts (W). (a) True (b) False
34. 34.📏 How many milliamperes (mA) is 0.11 A?
35. 35.📏 How many milliamperes (mA) make 1 ampere? (a) 60 (b) 1000 (c) 10 (d) 100
36. 36.📏 How many watts (W) is 1.5 kW?
37. 37.📏 How many ohms (Ω) is 3.5 kΩ?
38. 38.True or false: the voltmeter measures current. (a) False (b) True
39. 39.Which of these is measured in watts (W)? (a) resistance (b) the flow of charge (c) voltage (d) energy used each second
40. 40.True or false: energy used each second is measured in watts (W). (a) True (b) False

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