Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 557 · 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.True or false: energy used each second is measured in watts (W). (a) False (b) True
2. 2.True or false: the ammeter measures voltage. (a) True (b) False
3. 3.📏 How many ohms (Ω) is 4.1 kΩ?
4. 4.📏 How many kilowatts (kW) is 1550 W? =
5. 5.True or false: the voltmeter measures current. (a) True (b) False
6. 6.📏 How many milliamperes (mA) make 1 ampere? (a) 1000 (b) 100 (c) 60 (d) 10
7. 7.True or false: how much a part resists is measured in volts (V). (a) True (b) False
8. 8.Which of these is measured in ohms (Ω)? (a) power (b) current (c) how much a part resists (d) voltage
9. 9.📏 Which unit measures voltage? (a) ampere (A) (b) ohm (Ω) (c) volt (V) (d) watt (W)
10. 10.📏 Which unit measures the push of a cell? (a) ohm (Ω) (b) ampere (A) (c) volt (V) (d) watt (W)
11. 11.📏 Voltmeter or ammeter: which one is joined across a part? (a) voltmeter (b) ammeter
12. 12.True or false: current is measured in amperes (A). (a) True (b) False
13. 13.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 100 (b) 1024 (c) 1000 (d) 10
14. 14.📏 How many amperes (A) is 1190 mA? =
15. 15.Which of these is measured in watts (W)? (a) current (b) energy used each second (c) voltage (d) resistance
16. 16.True or false: resistance is measured in ohms (Ω). (a) False (b) True
17. 17.📏 In the water-pipe picture of a circuit, voltage is like … (a) the tap handle (b) the pipe colour (c) the water pressure (d) the water tank lid
18. 18.Which of these is measured in watts (W)? (a) the push of a cell (b) resistance (c) voltage (d) power
19. 19.📏 How many kilowatts (kW) is 1650 W? =
20. 20.📏 How many watts (W) is 4.7 kW?
21. 21.📏 How many kilowatts (kW) is 2150 W? =
22. 22.True or false: the voltmeter measures voltage. (a) False (b) True
23. 23.True or false: the ammeter is joined in series. (a) True (b) False
24. 24.📏 Which unit measures energy used each second? (a) volt (V) (b) ampere (A) (c) watt (W) (d) ohm (Ω)
25. 25.📏 In the water-pipe picture of a circuit, resistance is like … (a) the water pressure (b) a bigger tank (c) the flow of water (d) a narrow pipe
26. 26.📏 Voltmeter or ammeter: which one measures current? (a) voltmeter (b) ammeter
27. 27.📏 How many amperes (A) is 2050 mA? =
28. 28.📏 Which unit measures the flow of charge? (a) ohm (Ω) (b) volt (V) (c) ampere (A) (d) watt (W)
29. 29.📏 How many kilowatts (kW) is 3700 W? =
30. 30.True or false: the voltmeter is joined across a part. (a) True (b) False
31. 31.📏 Voltmeter or ammeter: which one is joined in series? (a) voltmeter (b) ammeter
32. 32.📏 In the water-pipe picture of a circuit, current is like … (a) a narrow pipe (b) the water pressure (c) the flow of water (d) the pipe colour
33. 33.📏 Which unit measures how much a part resists? (a) volt (V) (b) ampere (A) (c) watt (W) (d) ohm (Ω)
34. 34.📏 How many milliamperes (mA) is 1.63 A?
35. 35.📏 How many kilowatts (kW) is 650 W? =
36. 36.📏 How many watts (W) is 0.2 kW?
37. 37.📏 How many kilo-ohms (kΩ) is 8200 Ω? =
38. 38.Which of these is measured in amperes (A)? (a) current (b) how much a part resists (c) resistance (d) power
39. 39.📏 How many ohms (Ω) is 6.7 kΩ?
40. 40.📏 How many watts (W) is 5 kW?

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