Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 672 · 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, resistance is like … (a) the water pressure (b) the flow of water (c) a narrow pipe (d) a bigger tank
2. 2.📏 Which unit measures current? (a) volt (V) (b) ampere (A) (c) watt (W) (d) ohm (Ω)
3. 3.True or false: the voltmeter is joined in series. (a) True (b) False
4. 4.Which of these is measured in amperes (A)? (a) voltage (b) power (c) current (d) the push of a cell
5. 5.📏 How many watts (W) is 1.1 kW?
6. 6.True or false: resistance is measured in ohms (Ω). (a) False (b) True
7. 7.True or false: voltage is measured in volts (V). (a) True (b) False
8. 8.True or false: the ammeter is joined across a part. (a) False (b) True
9. 9.Which of these is measured in volts (V)? (a) resistance (b) voltage (c) energy used each second (d) current
10. 10.📏 Which unit measures the push of a cell? (a) ohm (Ω) (b) watt (W) (c) volt (V) (d) ampere (A)
11. 11.True or false: the ammeter measures voltage. (a) False (b) True
12. 12.📏 How many milliamperes (mA) make 1 ampere? (a) 1000 (b) 100 (c) 60 (d) 10
13. 13.True or false: energy used each second is measured in watts (W). (a) False (b) True
14. 14.📏 How many kilowatts (kW) is 450 W? =
15. 15.📏 How many amperes (A) is 2940 mA? =
16. 16.True or false: power is measured in ohms (Ω). (a) False (b) True
17. 17.True or false: the voltmeter is joined across a part. (a) True (b) False
18. 18.True or false: energy used each second is measured in amperes (A). (a) False (b) True
19. 19.📏 Voltmeter or ammeter: which one is joined in series? (a) voltmeter (b) ammeter
20. 20.Which of these is measured in ohms (Ω)? (a) the flow of charge (b) energy used each second (c) how much a part resists (d) the push of a cell
21. 21.📏 How many watts (W) is 2.4 kW?
22. 22.True or false: voltage is measured in ohms (Ω). (a) False (b) True
23. 23.📏 How many kilo-ohms (kΩ) is 700 Ω? =
24. 24.📏 Voltmeter or ammeter: which one measures voltage? (a) voltmeter (b) ammeter
25. 25.Which of these is measured in watts (W)? (a) the flow of charge (b) how much a part resists (c) resistance (d) energy used each second
26. 26.📏 Which unit measures how much a part resists? (a) watt (W) (b) ohm (Ω) (c) ampere (A) (d) volt (V)
27. 27.📏 How many amperes (A) is 60 mA? =
28. 28.📏 How many watts (W) is 4.4 kW?
29. 29.📏 In the water-pipe picture of a circuit, current is like … (a) the water pressure (b) the pipe colour (c) a narrow pipe (d) the flow of water
30. 30.📏 How many kilo-ohms (kΩ) is 1900 Ω? =
31. 31.📏 How many amperes (A) is 2580 mA? =
32. 32.📏 How many milliamperes (mA) is 0.37 A?
33. 33.📏 Which unit measures resistance? (a) volt (V) (b) ampere (A) (c) ohm (Ω) (d) watt (W)
34. 34.Which of these is measured in watts (W)? (a) the push of a cell (b) current (c) voltage (d) power
35. 35.Which of these is measured in volts (V)? (a) energy used each second (b) the push of a cell (c) how much a part resists (d) resistance
36. 36.📏 Which unit measures power? (a) ampere (A) (b) ohm (Ω) (c) volt (V) (d) watt (W)
37. 37.📏 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
38. 38.📏 How many watts (W) is 3.9 kW?
39. 39.📏 How many milliamperes (mA) is 2.32 A?
40. 40.True or false: the flow of charge is measured in amperes (A). (a) True (b) False

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