Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 64 · 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 2480 mA? =
2. 2.📏 Which unit measures the push of a cell? (a) ampere (A) (b) watt (W) (c) volt (V) (d) ohm (Ω)
3. 3.📏 How many amperes (A) is 110 mA? =
4. 4.📏 Which unit measures the flow of charge? (a) volt (V) (b) ampere (A) (c) watt (W) (d) ohm (Ω)
5. 5.Which of these is measured in volts (V)? (a) power (b) the flow of charge (c) voltage (d) resistance
6. 6.Which of these is measured in watts (W)? (a) the push of a cell (b) energy used each second (c) the flow of charge (d) current
7. 7.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 1024 (b) 1000 (c) 10 (d) 100
8. 8.True or false: current is measured in watts (W). (a) False (b) True
9. 9.📏 Which unit measures current? (a) watt (W) (b) ampere (A) (c) ohm (Ω) (d) volt (V)
10. 10.📏 Voltmeter or ammeter: which one is joined in series? (a) voltmeter (b) ammeter
11. 11.📏 In the water-pipe picture of a circuit, voltage is like … (a) the water tank lid (b) the pipe colour (c) the tap handle (d) the water pressure
12. 12.True or false: energy used each second is measured in watts (W). (a) False (b) True
13. 13.📏 How many ohms (Ω) is 8.8 kΩ?
14. 14.📏 Voltmeter or ammeter: which one measures voltage? (a) ammeter (b) voltmeter
15. 15.True or false: the voltmeter measures voltage. (a) False (b) True
16. 16.📏 Voltmeter or ammeter: which one measures current? (a) ammeter (b) voltmeter
17. 17.Which of these is measured in volts (V)? (a) resistance (b) the push of a cell (c) current (d) power
18. 18.True or false: how much a part resists is measured in amperes (A). (a) False (b) True
19. 19.True or false: the ammeter is joined in series. (a) True (b) False
20. 20.📏 Voltmeter or ammeter: which one is joined across a part? (a) voltmeter (b) ammeter
21. 21.True or false: the voltmeter is joined across a part. (a) False (b) True
22. 22.True or false: the ammeter is joined across a part. (a) False (b) True
23. 23.📏 Which unit measures how much a part resists? (a) ohm (Ω) (b) watt (W) (c) ampere (A) (d) volt (V)
24. 24.True or false: power is measured in volts (V). (a) False (b) True
25. 25.📏 How many kilo-ohms (kΩ) is 1800 Ω? =
26. 26.📏 Which unit measures resistance? (a) watt (W) (b) ohm (Ω) (c) volt (V) (d) ampere (A)
27. 27.📏 How many kilowatts (kW) is 50 W? =
28. 28.True or false: current is measured in ohms (Ω). (a) False (b) True
29. 29.📏 In the water-pipe picture of a circuit, resistance is like … (a) a narrow pipe (b) a bigger tank (c) the flow of water (d) the water pressure
30. 30.📏 How many milliamperes (mA) make 1 ampere? (a) 1000 (b) 10 (c) 100 (d) 60
31. 31.📏 How many ohms (Ω) is 3.9 kΩ?
32. 32.Which of these is measured in amperes (A)? (a) how much a part resists (b) energy used each second (c) the push of a cell (d) the flow of charge
33. 33.📏 Which unit measures voltage? (a) ampere (A) (b) watt (W) (c) volt (V) (d) ohm (Ω)
34. 34.True or false: the voltmeter measures current. (a) False (b) True
35. 35.📏 How many kilowatts (kW) is 4350 W? =
36. 36.Which of these is measured in ohms (Ω)? (a) the push of a cell (b) power (c) resistance (d) the flow of charge
37. 37.📏 How many kilo-ohms (kΩ) is 4400 Ω? =
38. 38.True or false: the ammeter measures voltage. (a) False (b) True
39. 39.📏 How many amperes (A) is 2820 mA? =
40. 40.📏 How many kilowatts (kW) is 650 W? =

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