Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 577 · 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.📏 Voltmeter or ammeter: which one measures voltage? (a) ammeter (b) voltmeter
2. 2.📏 How many watts (W) is 2.4 kW?
3. 3.Which of these is measured in watts (W)? (a) resistance (b) current (c) how much a part resists (d) energy used each second
4. 4.📏 How many amperes (A) is 280 mA? =
5. 5.📏 Which unit measures power? (a) ohm (Ω) (b) ampere (A) (c) watt (W) (d) volt (V)
6. 6.📏 How many milliamperes (mA) make 1 ampere? (a) 100 (b) 60 (c) 10 (d) 1000
7. 7.📏 How many milliamperes (mA) is 1.85 A?
8. 8.📏 How many kilo-ohms (kΩ) is 7200 Ω? =
9. 9.📏 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
10. 10.📏 Which unit measures the push of a cell? (a) watt (W) (b) ampere (A) (c) ohm (Ω) (d) volt (V)
11. 11.True or false: resistance is measured in volts (V). (a) False (b) True
12. 12.📏 In the water-pipe picture of a circuit, voltage is like … (a) the tap handle (b) the pipe colour (c) the water tank lid (d) the water pressure
13. 13.📏 Which unit measures the flow of charge? (a) watt (W) (b) volt (V) (c) ampere (A) (d) ohm (Ω)
14. 14.True or false: energy used each second is measured in amperes (A). (a) True (b) False
15. 15.True or false: the ammeter measures current. (a) True (b) False
16. 16.📏 Voltmeter or ammeter: which one is joined in series? (a) ammeter (b) voltmeter
17. 17.📏 In the water-pipe picture of a circuit, current is like … (a) the pipe colour (b) a narrow pipe (c) the flow of water (d) the water pressure
18. 18.True or false: the ammeter is joined across a part. (a) True (b) False
19. 19.Which of these is measured in amperes (A)? (a) energy used each second (b) power (c) current (d) voltage
20. 20.📏 How many watts (W) is 1.8 kW?
21. 21.📏 How many ohms (Ω) is 10 kΩ?
22. 22.📏 How many ohms (Ω) is 0.3 kΩ?
23. 23.True or false: the voltmeter is joined in series. (a) True (b) False
24. 24.Which of these is measured in ohms (Ω)? (a) the flow of charge (b) the push of a cell (c) voltage (d) resistance
25. 25.📏 How many ohms (Ω) is 3.8 kΩ?
26. 26.📏 How many watts (W) is 0.9 kW?
27. 27.📏 How many kilowatts (kW) is 300 W? =
28. 28.True or false: the voltmeter measures current. (a) False (b) True
29. 29.True or false: power is measured in amperes (A). (a) False (b) True
30. 30.True or false: the push of a cell is measured in volts (V). (a) True (b) False
31. 31.Which of these is measured in ohms (Ω)? (a) the push of a cell (b) voltage (c) how much a part resists (d) the flow of charge
32. 32.📏 How many kilo-ohms (kΩ) is 4200 Ω? =
33. 33.True or false: the ammeter measures voltage. (a) True (b) False
34. 34.True or false: resistance is measured in ohms (Ω). (a) True (b) False
35. 35.True or false: the voltmeter is joined across a part. (a) False (b) True
36. 36.📏 How many kilowatts (kW) is 3250 W? =
37. 37.Which of these is measured in amperes (A)? (a) how much a part resists (b) the flow of charge (c) the push of a cell (d) resistance
38. 38.True or false: the flow of charge is measured in volts (V). (a) False (b) True
39. 39.📏 How many kilowatts (kW) is 600 W? =
40. 40.True or false: the ammeter is joined in series. (a) True (b) False

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