Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 426 · 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 voltmeter measures voltage. (a) True (b) False
2. 2.True or false: energy used each second is measured in volts (V). (a) True (b) False
3. 3.Which of these is measured in watts (W)? (a) the push of a cell (b) resistance (c) energy used each second (d) current
4. 4.Which of these is measured in ohms (Ω)? (a) the push of a cell (b) current (c) resistance (d) the flow of charge
5. 5.True or false: how much a part resists is measured in volts (V). (a) True (b) False
6. 6.True or false: the ammeter measures current. (a) False (b) True
7. 7.📏 In the water-pipe picture of a circuit, voltage is like … (a) the water pressure (b) the water tank lid (c) the tap handle (d) the pipe colour
8. 8.📏 Which unit measures voltage? (a) watt (W) (b) volt (V) (c) ohm (Ω) (d) ampere (A)
9. 9.📏 Which unit measures resistance? (a) ohm (Ω) (b) volt (V) (c) ampere (A) (d) watt (W)
10. 10.📏 How many milliamperes (mA) is 2.99 A?
11. 11.Which of these is measured in amperes (A)? (a) how much a part resists (b) voltage (c) the push of a cell (d) current
12. 12.📏 How many amperes (A) is 60 mA? =
13. 13.True or false: power is measured in volts (V). (a) True (b) False
14. 14.📏 Voltmeter or ammeter: which one is joined across a part? (a) ammeter (b) voltmeter
15. 15.📏 How many ohms (Ω) is 8.8 kΩ?
16. 16.📏 How many ohms (Ω) is 2.5 kΩ?
17. 17.True or false: voltage is measured in volts (V). (a) False (b) True
18. 18.📏 How many kilo-ohms (kΩ) is 2900 Ω? =
19. 19.📏 Which unit measures power? (a) volt (V) (b) ampere (A) (c) watt (W) (d) ohm (Ω)
20. 20.True or false: how much a part resists is measured in ohms (Ω). (a) False (b) True
21. 21.📏 How many kilowatts (kW) is 1150 W? =
22. 22.📏 How many amperes (A) is 2490 mA? =
23. 23.📏 How many watts (W) is 0.1 kW?
24. 24.Which of these is measured in volts (V)? (a) current (b) the push of a cell (c) energy used each second (d) resistance
25. 25.📏 How many watts (W) is 3.7 kW?
26. 26.True or false: the ammeter measures voltage. (a) True (b) False
27. 27.📏 In the water-pipe picture of a circuit, current is like … (a) the pipe colour (b) the water pressure (c) a narrow pipe (d) the flow of water
28. 28.True or false: current is measured in watts (W). (a) False (b) True
29. 29.Which of these is measured in watts (W)? (a) the push of a cell (b) power (c) current (d) how much a part resists
30. 30.True or false: resistance is measured in amperes (A). (a) False (b) True
31. 31.📏 Voltmeter or ammeter: which one measures current? (a) voltmeter (b) ammeter
32. 32.📏 How many milliamperes (mA) is 1.36 A?
33. 33.📏 Which unit measures current? (a) volt (V) (b) watt (W) (c) ampere (A) (d) ohm (Ω)
34. 34.True or false: the flow of charge is measured in ohms (Ω). (a) True (b) False
35. 35.📏 How many kilowatts (kW) is 4600 W? =
36. 36.📏 How many milliamperes (mA) is 0.43 A?
37. 37.📏 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
38. 38.📏 Which unit measures the push of a cell? (a) ampere (A) (b) volt (V) (c) ohm (Ω) (d) watt (W)
39. 39.📏 How many milliamperes (mA) is 0.67 A?
40. 40.📏 How many kilo-ohms (kΩ) is 2000 Ω? =

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