Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 815 · 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 current? (a) ammeter (b) voltmeter
2. 2.📏 Voltmeter or ammeter: which one is joined across a part? (a) voltmeter (b) ammeter
3. 3.📏 In the water-pipe picture of a circuit, resistance is like … (a) the water pressure (b) the flow of water (c) a narrow pipe (d) a bigger tank
4. 4.📏 Voltmeter or ammeter: which one is joined in series? (a) voltmeter (b) ammeter
5. 5.True or false: resistance is measured in ohms (Ω). (a) True (b) False
6. 6.📏 How many kilowatts (kW) is 800 W? =
7. 7.📏 How many milliamperes (mA) is 1.21 A?
8. 8.📏 Voltmeter or ammeter: which one measures voltage? (a) voltmeter (b) ammeter
9. 9.📏 How many amperes (A) is 2430 mA? =
10. 10.📏 How many milliamperes (mA) make 1 ampere? (a) 10 (b) 1000 (c) 60 (d) 100
11. 11.True or false: how much a part resists is measured in volts (V). (a) False (b) True
12. 12.Which of these is measured in ohms (Ω)? (a) the push of a cell (b) energy used each second (c) voltage (d) how much a part resists
13. 13.📏 How many watts (W) is 4.9 kW?
14. 14.📏 How many kilowatts (kW) is 4750 W? =
15. 15.True or false: the push of a cell is measured in volts (V). (a) True (b) False
16. 16.📏 How many amperes (A) is 540 mA? =
17. 17.📏 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
18. 18.True or false: voltage is measured in watts (W). (a) False (b) True
19. 19.📏 Which unit measures the push of a cell? (a) watt (W) (b) ohm (Ω) (c) ampere (A) (d) volt (V)
20. 20.📏 Which unit measures energy used each second? (a) ampere (A) (b) watt (W) (c) ohm (Ω) (d) volt (V)
21. 21.📏 How many milliamperes (mA) is 2.27 A?
22. 22.True or false: power is measured in watts (W). (a) False (b) True
23. 23.📏 How many ohms (Ω) is 0.9 kΩ?
24. 24.📏 How many watts (W) is 1.7 kW?
25. 25.Which of these is measured in watts (W)? (a) energy used each second (b) how much a part resists (c) the flow of charge (d) voltage
26. 26.Which of these is measured in volts (V)? (a) how much a part resists (b) power (c) voltage (d) energy used each second
27. 27.Which of these is measured in volts (V)? (a) current (b) how much a part resists (c) the push of a cell (d) power
28. 28.📏 In the water-pipe picture of a circuit, current is like … (a) the flow of water (b) a narrow pipe (c) the pipe colour (d) the water pressure
29. 29.📏 Which unit measures voltage? (a) ohm (Ω) (b) volt (V) (c) ampere (A) (d) watt (W)
30. 30.📏 Which unit measures the flow of charge? (a) volt (V) (b) ohm (Ω) (c) watt (W) (d) ampere (A)
31. 31.📏 Which unit measures how much a part resists? (a) volt (V) (b) ampere (A) (c) watt (W) (d) ohm (Ω)
32. 32.Which of these is measured in watts (W)? (a) voltage (b) how much a part resists (c) current (d) power
33. 33.📏 How many kilowatts (kW) is 1400 W? =
34. 34.📏 How many amperes (A) is 1880 mA? =
35. 35.Which of these is measured in amperes (A)? (a) resistance (b) the push of a cell (c) how much a part resists (d) the flow of charge
36. 36.True or false: the ammeter measures voltage. (a) False (b) True
37. 37.📏 How many kilo-ohms (kΩ) is 4200 Ω? =
38. 38.True or false: voltage is measured in ohms (Ω). (a) True (b) False
39. 39.True or false: the voltmeter measures current. (a) True (b) False
40. 40.📏 How many watts (W) is 3 kW?

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