Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 682 · 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.📏 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
2. 2.📏 How many watts (W) is 2.1 kW?
3. 3.True or false: power is measured in volts (V). (a) True (b) False
4. 4.📏 How many kilowatts (kW) is 1650 W? =
5. 5.Which of these is measured in volts (V)? (a) the push of a cell (b) power (c) resistance (d) the flow of charge
6. 6.True or false: resistance is measured in volts (V). (a) False (b) True
7. 7.📏 Which unit measures energy used each second? (a) volt (V) (b) ampere (A) (c) watt (W) (d) ohm (Ω)
8. 8.📏 How many kilo-ohms (kΩ) is 5400 Ω? =
9. 9.📏 Which unit measures current? (a) volt (V) (b) ohm (Ω) (c) watt (W) (d) ampere (A)
10. 10.📏 How many watts (W) is 0.4 kW?
11. 11.Which of these is measured in amperes (A)? (a) voltage (b) the flow of charge (c) resistance (d) power
12. 12.📏 Voltmeter or ammeter: which one measures voltage? (a) ammeter (b) voltmeter
13. 13.True or false: the ammeter measures voltage. (a) True (b) False
14. 14.📏 Which unit measures the flow of charge? (a) ohm (Ω) (b) ampere (A) (c) volt (V) (d) watt (W)
15. 15.📏 How many watts (W) is 2.7 kW?
16. 16.📏 How many watts (W) is 1 kW?
17. 17.True or false: voltage is measured in amperes (A). (a) True (b) False
18. 18.📏 How many ohms (Ω) is 8.7 kΩ?
19. 19.📏 In the water-pipe picture of a circuit, current is like … (a) the flow of water (b) the pipe colour (c) the water pressure (d) a narrow pipe
20. 20.📏 Voltmeter or ammeter: which one is joined in series? (a) ammeter (b) voltmeter
21. 21.📏 How many kilo-ohms (kΩ) is 2600 Ω? =
22. 22.Which of these is measured in volts (V)? (a) energy used each second (b) resistance (c) voltage (d) current
23. 23.Which of these is measured in ohms (Ω)? (a) the push of a cell (b) how much a part resists (c) the flow of charge (d) power
24. 24.📏 In the water-pipe picture of a circuit, resistance is like … (a) a bigger tank (b) the water pressure (c) the flow of water (d) a narrow pipe
25. 25.📏 Which unit measures power? (a) volt (V) (b) ampere (A) (c) ohm (Ω) (d) watt (W)
26. 26.📏 How many watts (W) is 1.2 kW?
27. 27.📏 Which unit measures resistance? (a) ohm (Ω) (b) ampere (A) (c) volt (V) (d) watt (W)
28. 28.📏 Voltmeter or ammeter: which one measures current? (a) voltmeter (b) ammeter
29. 29.Which of these is measured in amperes (A)? (a) energy used each second (b) current (c) the push of a cell (d) voltage
30. 30.True or false: the voltmeter measures voltage. (a) False (b) True
31. 31.📏 How many kilowatts (kW) is 2000 W? =
32. 32.📏 How many milliamperes (mA) make 1 ampere? (a) 100 (b) 60 (c) 10 (d) 1000
33. 33.📏 How many milliamperes (mA) is 2.63 A?
34. 34.📏 How many amperes (A) is 2100 mA? =
35. 35.📏 Which unit measures voltage? (a) ampere (A) (b) ohm (Ω) (c) watt (W) (d) volt (V)
36. 36.📏 How many kilowatts (kW) is 150 W? =
37. 37.Which of these is measured in watts (W)? (a) how much a part resists (b) resistance (c) current (d) power
38. 38.True or false: the voltmeter measures current. (a) True (b) False
39. 39.📏 How many milliamperes (mA) is 0.27 A?
40. 40.📏 Voltmeter or ammeter: which one is joined across a part? (a) voltmeter (b) ammeter

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