Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 382 · 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 amperes (A)? (a) resistance (b) power (c) the flow of charge (d) how much a part resists
2. 2.True or false: the flow of charge is measured in amperes (A). (a) False (b) True
3. 3.Which of these is measured in amperes (A)? (a) voltage (b) the push of a cell (c) current (d) power
4. 4.📏 How many watts (W) is 4.9 kW?
5. 5.📏 In the water-pipe picture of a circuit, voltage is like … (a) the pipe colour (b) the tap handle (c) the water tank lid (d) the water pressure
6. 6.📏 How many watts (W) is 0.5 kW?
7. 7.📏 Which unit measures energy used each second? (a) watt (W) (b) ohm (Ω) (c) ampere (A) (d) volt (V)
8. 8.📏 Which unit measures the flow of charge? (a) ohm (Ω) (b) ampere (A) (c) volt (V) (d) watt (W)
9. 9.Which of these is measured in volts (V)? (a) the flow of charge (b) power (c) resistance (d) voltage
10. 10.True or false: the push of a cell is measured in volts (V). (a) False (b) True
11. 11.📏 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
12. 12.True or false: the ammeter measures voltage. (a) False (b) True
13. 13.📏 Voltmeter or ammeter: which one measures voltage? (a) voltmeter (b) ammeter
14. 14.True or false: energy used each second is measured in watts (W). (a) False (b) True
15. 15.📏 How many kilo-ohms (kΩ) is 9600 Ω? =
16. 16.Which of these is measured in volts (V)? (a) power (b) current (c) resistance (d) the push of a cell
17. 17.True or false: how much a part resists is measured in ohms (Ω). (a) True (b) False
18. 18.📏 How many amperes (A) is 2920 mA? =
19. 19.📏 How many kilowatts (kW) is 4100 W? =
20. 20.📏 How many kilowatts (kW) is 1150 W? =
21. 21.True or false: the ammeter is joined in series. (a) False (b) True
22. 22.📏 In the water-pipe picture of a circuit, current is like … (a) the pipe colour (b) the flow of water (c) the water pressure (d) a narrow pipe
23. 23.📏 Which unit measures the push of a cell? (a) volt (V) (b) watt (W) (c) ampere (A) (d) ohm (Ω)
24. 24.Which of these is measured in ohms (Ω)? (a) the push of a cell (b) how much a part resists (c) energy used each second (d) voltage
25. 25.Which of these is measured in watts (W)? (a) energy used each second (b) the push of a cell (c) resistance (d) voltage
26. 26.True or false: the voltmeter is joined in series. (a) True (b) False
27. 27.True or false: the voltmeter measures current. (a) True (b) False
28. 28.📏 How many kilowatts (kW) is 2250 W? =
29. 29.📏 How many kilo-ohms (kΩ) is 100 Ω? =
30. 30.True or false: current is measured in watts (W). (a) False (b) True
31. 31.True or false: the push of a cell is measured in amperes (A). (a) True (b) False
32. 32.📏 Which unit measures voltage? (a) watt (W) (b) ampere (A) (c) volt (V) (d) ohm (Ω)
33. 33.📏 How many milliamperes (mA) is 2.33 A?
34. 34.📏 How many kilo-ohms (kΩ) is 5500 Ω? =
35. 35.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 10 (b) 100 (c) 1024 (d) 1000
36. 36.📏 How many milliamperes (mA) make 1 ampere? (a) 10 (b) 1000 (c) 60 (d) 100
37. 37.True or false: power is measured in volts (V). (a) False (b) True
38. 38.📏 Voltmeter or ammeter: which one measures current? (a) ammeter (b) voltmeter
39. 39.📏 How many watts (W) is 3.1 kW?
40. 40.True or false: the voltmeter is joined across a part. (a) False (b) True

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