Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 572 · 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 of these is measured in volts (V)? (a) resistance (b) energy used each second (c) the push of a cell (d) the flow of charge
2. 2.📏 In the water-pipe picture of a circuit, current is like … (a) the water pressure (b) a narrow pipe (c) the pipe colour (d) the flow of water
3. 3.📏 How many amperes (A) is 590 mA? =
4. 4.True or false: how much a part resists is measured in ohms (Ω). (a) False (b) True
5. 5.True or false: voltage is measured in amperes (A). (a) True (b) False
6. 6.Which of these is measured in watts (W)? (a) the flow of charge (b) resistance (c) energy used each second (d) voltage
7. 7.Which of these is measured in volts (V)? (a) energy used each second (b) how much a part resists (c) current (d) voltage
8. 8.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 10 (b) 1000 (c) 100 (d) 1024
9. 9.Which of these is measured in ohms (Ω)? (a) power (b) the push of a cell (c) voltage (d) resistance
10. 10.Which of these is measured in amperes (A)? (a) current (b) voltage (c) the push of a cell (d) resistance
11. 11.📏 How many kilowatts (kW) is 3400 W? =
12. 12.True or false: the ammeter measures voltage. (a) True (b) False
13. 13.📏 In the water-pipe picture of a circuit, voltage is like … (a) the tap handle (b) the water pressure (c) the pipe colour (d) the water tank lid
14. 14.📏 Which unit measures voltage? (a) volt (V) (b) ohm (Ω) (c) ampere (A) (d) watt (W)
15. 15.True or false: the flow of charge is measured in volts (V). (a) True (b) False
16. 16.True or false: current is measured in amperes (A). (a) True (b) False
17. 17.📏 How many milliamperes (mA) make 1 ampere? (a) 10 (b) 60 (c) 100 (d) 1000
18. 18.📏 How many ohms (Ω) is 9 kΩ?
19. 19.📏 How many kilo-ohms (kΩ) is 6700 Ω? =
20. 20.📏 Which unit measures how much a part resists? (a) watt (W) (b) volt (V) (c) ampere (A) (d) ohm (Ω)
21. 21.True or false: the voltmeter measures current. (a) False (b) True
22. 22.True or false: the voltmeter is joined across a part. (a) True (b) False
23. 23.📏 Voltmeter or ammeter: which one is joined in series? (a) voltmeter (b) ammeter
24. 24.📏 How many kilowatts (kW) is 2750 W? =
25. 25.True or false: voltage is measured in volts (V). (a) True (b) False
26. 26.📏 Which unit measures energy used each second? (a) watt (W) (b) volt (V) (c) ampere (A) (d) ohm (Ω)
27. 27.📏 Voltmeter or ammeter: which one measures current? (a) ammeter (b) voltmeter
28. 28.True or false: current is measured in ohms (Ω). (a) False (b) True
29. 29.📏 How many watts (W) is 4.5 kW?
30. 30.📏 How many kilowatts (kW) is 1800 W? =
31. 31.📏 Voltmeter or ammeter: which one is joined across a part? (a) ammeter (b) voltmeter
32. 32.True or false: the voltmeter is joined in series. (a) True (b) False
33. 33.📏 How many amperes (A) is 2760 mA? =
34. 34.📏 How many ohms (Ω) is 2.5 kΩ?
35. 35.True or false: the voltmeter measures voltage. (a) False (b) True
36. 36.📏 Which unit measures power? (a) watt (W) (b) volt (V) (c) ampere (A) (d) ohm (Ω)
37. 37.📏 How many watts (W) is 3.2 kW?
38. 38.📏 How many watts (W) is 4.2 kW?
39. 39.📏 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
40. 40.📏 How many kilowatts (kW) is 950 W? =

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