Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 300 · 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: the ammeter measures voltage. (a) True (b) False
2. 2.📏 How many watts (W) is 3.1 kW?
3. 3.Which of these is measured in ohms (Ω)? (a) power (b) resistance (c) current (d) voltage
4. 4.📏 Which unit measures the push of a cell? (a) volt (V) (b) ampere (A) (c) ohm (Ω) (d) watt (W)
5. 5.True or false: power is measured in amperes (A). (a) True (b) False
6. 6.📏 How many milliamperes (mA) is 0.38 A?
7. 7.True or false: how much a part resists is measured in ohms (Ω). (a) False (b) True
8. 8.📏 Voltmeter or ammeter: which one measures voltage? (a) ammeter (b) voltmeter
9. 9.Which of these is measured in volts (V)? (a) the push of a cell (b) resistance (c) current (d) how much a part resists
10. 10.Which of these is measured in ohms (Ω)? (a) the push of a cell (b) how much a part resists (c) the flow of charge (d) power
11. 11.True or false: the push of a cell is measured in volts (V). (a) False (b) True
12. 12.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 100 (b) 1000 (c) 1024 (d) 10
13. 13.📏 In the water-pipe picture of a circuit, voltage is like … (a) the pipe colour (b) the water pressure (c) the water tank lid (d) the tap handle
14. 14.True or false: voltage is measured in watts (W). (a) True (b) False
15. 15.📏 How many milliamperes (mA) make 1 ampere? (a) 60 (b) 10 (c) 1000 (d) 100
16. 16.True or false: resistance is measured in ohms (Ω). (a) False (b) True
17. 17.📏 How many milliamperes (mA) is 1.53 A?
18. 18.📏 How many milliamperes (mA) is 1.07 A?
19. 19.True or false: the voltmeter is joined across a part. (a) False (b) True
20. 20.True or false: the voltmeter measures current. (a) False (b) True
21. 21.📏 In the water-pipe picture of a circuit, resistance is like … (a) the flow of water (b) a bigger tank (c) the water pressure (d) a narrow pipe
22. 22.📏 Which unit measures voltage? (a) ohm (Ω) (b) volt (V) (c) watt (W) (d) ampere (A)
23. 23.📏 How many watts (W) is 4.3 kW?
24. 24.📏 How many kilo-ohms (kΩ) is 2300 Ω? =
25. 25.True or false: the ammeter is joined across a part. (a) False (b) True
26. 26.Which of these is measured in watts (W)? (a) the push of a cell (b) the flow of charge (c) current (d) energy used each second
27. 27.📏 How many amperes (A) is 550 mA? =
28. 28.True or false: the voltmeter is joined in series. (a) True (b) False
29. 29.True or false: the push of a cell is measured in amperes (A). (a) True (b) False
30. 30.📏 Voltmeter or ammeter: which one is joined in series? (a) ammeter (b) voltmeter
31. 31.📏 Which unit measures power? (a) ohm (Ω) (b) volt (V) (c) ampere (A) (d) watt (W)
32. 32.📏 In the water-pipe picture of a circuit, current is like … (a) the flow of water (b) the water pressure (c) the pipe colour (d) a narrow pipe
33. 33.True or false: energy used each second is measured in amperes (A). (a) False (b) True
34. 34.📏 Which unit measures resistance? (a) ampere (A) (b) watt (W) (c) volt (V) (d) ohm (Ω)
35. 35.True or false: the ammeter is joined in series. (a) True (b) False
36. 36.📏 How many kilowatts (kW) is 800 W? =
37. 37.📏 How many kilowatts (kW) is 1550 W? =
38. 38.True or false: power is measured in watts (W). (a) False (b) True
39. 39.📏 How many watts (W) is 1 kW?
40. 40.Which of these is measured in amperes (A)? (a) the flow of charge (b) the push of a cell (c) power (d) voltage

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