Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 633 · 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.📏 Which unit measures energy used each second? (a) volt (V) (b) ampere (A) (c) ohm (Ω) (d) watt (W)
2. 2.📏 How many ohms (Ω) is 2.3 kΩ?
3. 3.True or false: the ammeter measures current. (a) False (b) True
4. 4.True or false: the voltmeter is joined in series. (a) False (b) True
5. 5.📏 How many ohms (Ω) is 4.2 kΩ?
6. 6.Which of these is measured in amperes (A)? (a) the push of a cell (b) how much a part resists (c) energy used each second (d) the flow of charge
7. 7.Which of these is measured in watts (W)? (a) current (b) voltage (c) the push of a cell (d) power
8. 8.📏 How many kilowatts (kW) is 4050 W? =
9. 9.📏 How many kilowatts (kW) is 4500 W? =
10. 10.📏 Voltmeter or ammeter: which one is joined in series? (a) voltmeter (b) ammeter
11. 11.📏 How many amperes (A) is 970 mA? =
12. 12.Which of these is measured in watts (W)? (a) how much a part resists (b) energy used each second (c) the push of a cell (d) the flow of charge
13. 13.📏 How many kilowatts (kW) is 3200 W? =
14. 14.True or false: the flow of charge is measured in amperes (A). (a) False (b) True
15. 15.True or false: the voltmeter measures current. (a) True (b) False
16. 16.Which of these is measured in ohms (Ω)? (a) the push of a cell (b) current (c) the flow of charge (d) resistance
17. 17.📏 How many ohms (Ω) is 9 kΩ?
18. 18.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 1000 (b) 10 (c) 1024 (d) 100
19. 19.📏 Which unit measures power? (a) ampere (A) (b) volt (V) (c) ohm (Ω) (d) watt (W)
20. 20.True or false: the ammeter measures voltage. (a) False (b) True
21. 21.📏 How many kilowatts (kW) is 400 W? =
22. 22.True or false: power is measured in volts (V). (a) True (b) False
23. 23.📏 How many amperes (A) is 320 mA? =
24. 24.📏 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
25. 25.📏 How many ohms (Ω) is 9.1 kΩ?
26. 26.Which of these is measured in volts (V)? (a) power (b) how much a part resists (c) voltage (d) resistance
27. 27.True or false: the flow of charge is measured in ohms (Ω). (a) False (b) True
28. 28.True or false: how much a part resists is measured in amperes (A). (a) True (b) False
29. 29.📏 Voltmeter or ammeter: which one is joined across a part? (a) voltmeter (b) ammeter
30. 30.True or false: resistance is measured in volts (V). (a) False (b) True
31. 31.📏 Which unit measures how much a part resists? (a) watt (W) (b) ampere (A) (c) ohm (Ω) (d) volt (V)
32. 32.📏 How many milliamperes (mA) is 0.14 A?
33. 33.📏 How many milliamperes (mA) is 0.2 A?
34. 34.True or false: the voltmeter is joined across a part. (a) False (b) True
35. 35.📏 In the water-pipe picture of a circuit, resistance is like … (a) a bigger tank (b) the flow of water (c) a narrow pipe (d) the water pressure
36. 36.📏 How many kilo-ohms (kΩ) is 9300 Ω? =
37. 37.📏 Which unit measures the push of a cell? (a) ampere (A) (b) watt (W) (c) volt (V) (d) ohm (Ω)
38. 38.Which of these is measured in amperes (A)? (a) current (b) resistance (c) the push of a cell (d) energy used each second
39. 39.📏 In the water-pipe picture of a circuit, voltage is like … (a) the tap handle (b) the water tank lid (c) the pipe colour (d) the water pressure
40. 40.True or false: the ammeter is joined across a part. (a) False (b) True

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