Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 518 · 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 watts (W)? (a) resistance (b) current (c) how much a part resists (d) power
2. 2.📏 Voltmeter or ammeter: which one measures voltage? (a) ammeter (b) voltmeter
3. 3.📏 Which unit measures voltage? (a) ohm (Ω) (b) ampere (A) (c) volt (V) (d) watt (W)
4. 4.📏 How many kilowatts (kW) is 1950 W? =
5. 5.📏 In the water-pipe picture of a circuit, resistance is like … (a) a narrow pipe (b) the flow of water (c) the water pressure (d) a bigger tank
6. 6.📏 How many kilowatts (kW) is 4250 W? =
7. 7.Which of these is measured in volts (V)? (a) voltage (b) current (c) the flow of charge (d) how much a part resists
8. 8.True or false: the voltmeter measures current. (a) False (b) True
9. 9.Which of these is measured in ohms (Ω)? (a) voltage (b) how much a part resists (c) the push of a cell (d) power
10. 10.True or false: the ammeter measures voltage. (a) True (b) False
11. 11.True or false: the ammeter is joined in series. (a) False (b) True
12. 12.Which of these is measured in amperes (A)? (a) current (b) voltage (c) power (d) energy used each second
13. 13.True or false: the push of a cell is measured in volts (V). (a) False (b) True
14. 14.📏 How many kilowatts (kW) is 2450 W? =
15. 15.📏 How many amperes (A) is 2110 mA? =
16. 16.📏 Which unit measures how much a part resists? (a) ohm (Ω) (b) ampere (A) (c) volt (V) (d) watt (W)
17. 17.📏 Which unit measures current? (a) ampere (A) (b) watt (W) (c) volt (V) (d) ohm (Ω)
18. 18.📏 Which unit measures resistance? (a) watt (W) (b) ohm (Ω) (c) ampere (A) (d) volt (V)
19. 19.📏 How many kilo-ohms (kΩ) is 2700 Ω? =
20. 20.📏 How many milliamperes (mA) is 0.05 A?
21. 21.📏 Voltmeter or ammeter: which one is joined across a part? (a) voltmeter (b) ammeter
22. 22.Which of these is measured in amperes (A)? (a) the flow of charge (b) the push of a cell (c) voltage (d) how much a part resists
23. 23.📏 Voltmeter or ammeter: which one measures current? (a) voltmeter (b) ammeter
24. 24.📏 How many watts (W) is 3.2 kW?
25. 25.📏 How many ohms (Ω) is 3.1 kΩ?
26. 26.📏 How many kilowatts (kW) is 400 W? =
27. 27.📏 How many milliamperes (mA) is 0.4 A?
28. 28.📏 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
29. 29.📏 How many ohms (Ω) is 2.9 kΩ?
30. 30.True or false: resistance is measured in ohms (Ω). (a) True (b) False
31. 31.📏 Which unit measures the push of a cell? (a) ampere (A) (b) volt (V) (c) ohm (Ω) (d) watt (W)
32. 32.📏 How many milliamperes (mA) make 1 ampere? (a) 60 (b) 10 (c) 100 (d) 1000
33. 33.True or false: how much a part resists is measured in ohms (Ω). (a) True (b) False
34. 34.True or false: the push of a cell is measured in amperes (A). (a) False (b) True
35. 35.📏 Which unit measures energy used each second? (a) ampere (A) (b) ohm (Ω) (c) volt (V) (d) watt (W)
36. 36.True or false: power is measured in watts (W). (a) False (b) True
37. 37.📏 How many kilo-ohms (kΩ) is 8600 Ω? =
38. 38.📏 In the water-pipe picture of a circuit, current is like … (a) a narrow pipe (b) the pipe colour (c) the water pressure (d) the flow of water
39. 39.Which of these is measured in volts (V)? (a) the push of a cell (b) resistance (c) current (d) how much a part resists
40. 40.📏 How many milliamperes (mA) is 2.42 A?

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