Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 997 · 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 power? (a) ohm (Ω) (b) ampere (A) (c) volt (V) (d) watt (W)
2. 2.📏 Voltmeter or ammeter: which one is joined across a part? (a) voltmeter (b) ammeter
3. 3.Which of these is measured in watts (W)? (a) how much a part resists (b) current (c) power (d) the push of a cell
4. 4.📏 In the water-pipe picture of a circuit, current is like … (a) a narrow pipe (b) the flow of water (c) the pipe colour (d) the water pressure
5. 5.📏 Which unit measures energy used each second? (a) ohm (Ω) (b) ampere (A) (c) volt (V) (d) watt (W)
6. 6.True or false: the ammeter measures current. (a) False (b) True
7. 7.Which of these is measured in watts (W)? (a) resistance (b) the push of a cell (c) energy used each second (d) how much a part resists
8. 8.True or false: the voltmeter measures voltage. (a) True (b) False
9. 9.📏 How many kilowatts (kW) is 3150 W? =
10. 10.Which of these is measured in ohms (Ω)? (a) power (b) voltage (c) resistance (d) current
11. 11.📏 How many kilo-ohms (kΩ) is 1600 Ω? =
12. 12.Which of these is measured in amperes (A)? (a) energy used each second (b) how much a part resists (c) power (d) the flow of charge
13. 13.📏 How many kilo-ohms (kΩ) is 2200 Ω? =
14. 14.True or false: the ammeter is joined in series. (a) False (b) True
15. 15.Which of these is measured in volts (V)? (a) voltage (b) resistance (c) power (d) the flow of charge
16. 16.True or false: the ammeter is joined across a part. (a) False (b) True
17. 17.📏 How many ohms (Ω) is 6.5 kΩ?
18. 18.📏 How many kilowatts (kW) is 400 W? =
19. 19.📏 How many kilowatts (kW) is 850 W? =
20. 20.📏 Voltmeter or ammeter: which one is joined in series? (a) ammeter (b) voltmeter
21. 21.📏 How many kilo-ohms (kΩ) is 200 Ω? =
22. 22.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 1024 (b) 100 (c) 1000 (d) 10
23. 23.Which of these is measured in ohms (Ω)? (a) voltage (b) energy used each second (c) the push of a cell (d) how much a part resists
24. 24.📏 How many amperes (A) is 2570 mA? =
25. 25.📏 How many kilowatts (kW) is 2700 W? =
26. 26.True or false: the voltmeter is joined across a part. (a) False (b) True
27. 27.True or false: the ammeter measures voltage. (a) True (b) False
28. 28.True or false: current is measured in watts (W). (a) True (b) False
29. 29.📏 In the water-pipe picture of a circuit, resistance is like … (a) a narrow pipe (b) the flow of water (c) a bigger tank (d) the water pressure
30. 30.📏 Voltmeter or ammeter: which one measures voltage? (a) ammeter (b) voltmeter
31. 31.📏 How many kilowatts (kW) is 450 W? =
32. 32.📏 How many watts (W) is 3.2 kW?
33. 33.📏 Which unit measures voltage? (a) ampere (A) (b) watt (W) (c) ohm (Ω) (d) volt (V)
34. 34.True or false: the voltmeter measures current. (a) True (b) False
35. 35.📏 Voltmeter or ammeter: which one measures current? (a) voltmeter (b) ammeter
36. 36.📏 How many milliamperes (mA) make 1 ampere? (a) 1000 (b) 100 (c) 10 (d) 60
37. 37.True or false: the flow of charge is measured in ohms (Ω). (a) True (b) False
38. 38.True or false: current is measured in amperes (A). (a) True (b) False
39. 39.📏 How many watts (W) is 4.6 kW?
40. 40.📏 In the water-pipe picture of a circuit, voltage is like … (a) the pipe colour (b) the water pressure (c) the tap handle (d) the water tank lid

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