Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 460 · 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 resistance? (a) volt (V) (b) ampere (A) (c) ohm (Ω) (d) watt (W)
2. 2.📏 How many kilowatts (kW) is 2350 W? =
3. 3.📏 Which unit measures voltage? (a) watt (W) (b) volt (V) (c) ampere (A) (d) ohm (Ω)
4. 4.True or false: voltage is measured in watts (W). (a) True (b) False
5. 5.Which of these is measured in amperes (A)? (a) energy used each second (b) how much a part resists (c) current (d) voltage
6. 6.Which of these is measured in watts (W)? (a) resistance (b) voltage (c) power (d) how much a part resists
7. 7.📏 How many kilowatts (kW) is 200 W? =
8. 8.True or false: the voltmeter measures current. (a) False (b) True
9. 9.True or false: how much a part resists is measured in volts (V). (a) False (b) True
10. 10.True or false: how much a part resists is measured in ohms (Ω). (a) False (b) True
11. 11.📏 Voltmeter or ammeter: which one is joined across a part? (a) voltmeter (b) ammeter
12. 12.📏 Voltmeter or ammeter: which one measures voltage? (a) ammeter (b) voltmeter
13. 13.📏 Which unit measures the flow of charge? (a) watt (W) (b) ohm (Ω) (c) ampere (A) (d) volt (V)
14. 14.📏 How many kilowatts (kW) is 2800 W? =
15. 15.Which of these is measured in watts (W)? (a) resistance (b) voltage (c) the flow of charge (d) energy used each second
16. 16.📏 How many watts (W) is 3.3 kW?
17. 17.True or false: energy used each second is measured in watts (W). (a) True (b) False
18. 18.True or false: the ammeter is joined in series. (a) True (b) False
19. 19.📏 Which unit measures how much a part resists? (a) ohm (Ω) (b) volt (V) (c) watt (W) (d) ampere (A)
20. 20.True or false: power is measured in volts (V). (a) True (b) False
21. 21.True or false: the voltmeter measures voltage. (a) False (b) True
22. 22.📏 In the water-pipe picture of a circuit, current is like … (a) the flow of water (b) a narrow pipe (c) the water pressure (d) the pipe colour
23. 23.📏 How many milliamperes (mA) is 2.45 A?
24. 24.📏 Which unit measures the push of a cell? (a) ohm (Ω) (b) ampere (A) (c) watt (W) (d) volt (V)
25. 25.📏 Which unit measures current? (a) watt (W) (b) ampere (A) (c) ohm (Ω) (d) volt (V)
26. 26.Which of these is measured in amperes (A)? (a) the push of a cell (b) energy used each second (c) how much a part resists (d) the flow of charge
27. 27.📏 Voltmeter or ammeter: which one measures current? (a) ammeter (b) voltmeter
28. 28.True or false: the ammeter measures voltage. (a) True (b) False
29. 29.📏 In the water-pipe picture of a circuit, voltage is like … (a) the water tank lid (b) the tap handle (c) the pipe colour (d) the water pressure
30. 30.True or false: the voltmeter is joined in series. (a) True (b) False
31. 31.📏 How many milliamperes (mA) is 1.45 A?
32. 32.True or false: the ammeter measures current. (a) True (b) False
33. 33.📏 How many amperes (A) is 1210 mA? =
34. 34.📏 Which unit measures energy used each second? (a) watt (W) (b) ampere (A) (c) volt (V) (d) ohm (Ω)
35. 35.True or false: voltage is measured in volts (V). (a) False (b) True
36. 36.True or false: voltage is measured in ohms (Ω). (a) True (b) False
37. 37.📏 How many kilowatts (kW) is 1400 W? =
38. 38.True or false: power is measured in amperes (A). (a) False (b) True
39. 39.📏 How many kilo-ohms (kΩ) is 7500 Ω? =
40. 40.Which of these is measured in volts (V)? (a) how much a part resists (b) the flow of charge (c) voltage (d) current

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