Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 688 · 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.📏 How many kilowatts (kW) is 400 W? =
2. 2.📏 How many amperes (A) is 1470 mA? =
3. 3.📏 How many kilowatts (kW) is 4000 W? =
4. 4.📏 How many milliamperes (mA) is 2.82 A?
5. 5.📏 In the water-pipe picture of a circuit, resistance is like … (a) the flow of water (b) a bigger tank (c) the water pressure (d) a narrow pipe
6. 6.📏 Which unit measures the push of a cell? (a) ampere (A) (b) watt (W) (c) ohm (Ω) (d) volt (V)
7. 7.📏 Voltmeter or ammeter: which one is joined across a part? (a) ammeter (b) voltmeter
8. 8.Which of these is measured in volts (V)? (a) how much a part resists (b) resistance (c) power (d) the push of a cell
9. 9.📏 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
10. 10.📏 Which unit measures how much a part resists? (a) ampere (A) (b) ohm (Ω) (c) volt (V) (d) watt (W)
11. 11.Which of these is measured in watts (W)? (a) current (b) resistance (c) the flow of charge (d) power
12. 12.📏 How many kilowatts (kW) is 4450 W? =
13. 13.📏 Voltmeter or ammeter: which one is joined in series? (a) voltmeter (b) ammeter
14. 14.True or false: the flow of charge is measured in volts (V). (a) True (b) False
15. 15.True or false: the voltmeter is joined in series. (a) True (b) False
16. 16.📏 How many kilo-ohms (kΩ) is 300 Ω? =
17. 17.Which of these is measured in ohms (Ω)? (a) how much a part resists (b) current (c) the push of a cell (d) energy used each second
18. 18.📏 Voltmeter or ammeter: which one measures current? (a) ammeter (b) voltmeter
19. 19.Which of these is measured in watts (W)? (a) how much a part resists (b) energy used each second (c) current (d) the push of a cell
20. 20.📏 How many milliamperes (mA) is 1.4 A?
21. 21.True or false: the voltmeter measures voltage. (a) False (b) True
22. 22.Which of these is measured in ohms (Ω)? (a) voltage (b) the flow of charge (c) power (d) resistance
23. 23.True or false: power is measured in ohms (Ω). (a) False (b) True
24. 24.True or false: power is measured in watts (W). (a) False (b) True
25. 25.Which of these is measured in amperes (A)? (a) resistance (b) the flow of charge (c) the push of a cell (d) how much a part resists
26. 26.📏 How many milliamperes (mA) is 2.06 A?
27. 27.📏 Which unit measures energy used each second? (a) watt (W) (b) volt (V) (c) ohm (Ω) (d) ampere (A)
28. 28.True or false: the ammeter is joined in series. (a) True (b) False
29. 29.📏 Which unit measures voltage? (a) ampere (A) (b) volt (V) (c) ohm (Ω) (d) watt (W)
30. 30.📏 How many kilo-ohms (kΩ) is 8900 Ω? =
31. 31.📏 How many kilo-ohms (kΩ) is 3900 Ω? =
32. 32.Which of these is measured in volts (V)? (a) energy used each second (b) voltage (c) resistance (d) power
33. 33.📏 How many kilowatts (kW) is 2100 W? =
34. 34.📏 Voltmeter or ammeter: which one measures voltage? (a) ammeter (b) voltmeter
35. 35.📏 How many kilo-ohms (kΩ) is 1600 Ω? =
36. 36.True or false: the push of a cell is measured in watts (W). (a) True (b) False
37. 37.📏 How many ohms (Ω) is 7.1 kΩ?
38. 38.📏 How many milliamperes (mA) is 1.83 A?
39. 39.📏 How many kilo-ohms (kΩ) is 8600 Ω? =
40. 40.📏 How many milliamperes (mA) make 1 ampere? (a) 60 (b) 1000 (c) 10 (d) 100

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