Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 784 · 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: voltage is measured in watts (W). (a) True (b) False
2. 2.📏 Which unit measures the push of a cell? (a) watt (W) (b) ohm (Ω) (c) volt (V) (d) ampere (A)
3. 3.📏 In the water-pipe picture of a circuit, current is like … (a) the pipe colour (b) a narrow pipe (c) the flow of water (d) the water pressure
4. 4.📏 How many amperes (A) is 1110 mA? =
5. 5.Which of these is measured in watts (W)? (a) power (b) how much a part resists (c) the push of a cell (d) the flow of charge
6. 6.📏 How many milliamperes (mA) is 1.91 A?
7. 7.Which of these is measured in volts (V)? (a) the flow of charge (b) the push of a cell (c) current (d) how much a part resists
8. 8.📏 How many ohms (Ω) is 6.3 kΩ?
9. 9.True or false: the voltmeter measures current. (a) True (b) False
10. 10.📏 Which unit measures power? (a) volt (V) (b) watt (W) (c) ampere (A) (d) ohm (Ω)
11. 11.📏 How many kilowatts (kW) is 3950 W? =
12. 12.📏 How many kilo-ohms (kΩ) is 8400 Ω? =
13. 13.📏 Which unit measures voltage? (a) ampere (A) (b) ohm (Ω) (c) watt (W) (d) volt (V)
14. 14.📏 How many amperes (A) is 560 mA? =
15. 15.True or false: the ammeter is joined in series. (a) True (b) False
16. 16.📏 In the water-pipe picture of a circuit, voltage is like … (a) the water tank lid (b) the water pressure (c) the pipe colour (d) the tap handle
17. 17.📏 Which unit measures how much a part resists? (a) ampere (A) (b) volt (V) (c) watt (W) (d) ohm (Ω)
18. 18.Which of these is measured in volts (V)? (a) resistance (b) voltage (c) the flow of charge (d) how much a part resists
19. 19.📏 How many milliamperes (mA) make 1 ampere? (a) 1000 (b) 10 (c) 60 (d) 100
20. 20.True or false: the voltmeter measures voltage. (a) False (b) True
21. 21.📏 Voltmeter or ammeter: which one measures voltage? (a) ammeter (b) voltmeter
22. 22.True or false: the voltmeter is joined in series. (a) False (b) True
23. 23.📏 How many milliamperes (mA) is 2.9 A?
24. 24.📏 How many milliamperes (mA) is 1.42 A?
25. 25.📏 How many milliamperes (mA) is 2.22 A?
26. 26.📏 Voltmeter or ammeter: which one measures current? (a) voltmeter (b) ammeter
27. 27.Which of these is measured in watts (W)? (a) voltage (b) how much a part resists (c) the flow of charge (d) energy used each second
28. 28.True or false: the ammeter measures current. (a) False (b) True
29. 29.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 10 (b) 100 (c) 1000 (d) 1024
30. 30.📏 How many kilo-ohms (kΩ) is 3900 Ω? =
31. 31.📏 In the water-pipe picture of a circuit, resistance is like … (a) a narrow pipe (b) a bigger tank (c) the flow of water (d) the water pressure
32. 32.📏 How many kilowatts (kW) is 4100 W? =
33. 33.True or false: the ammeter is joined across a part. (a) False (b) True
34. 34.📏 Voltmeter or ammeter: which one is joined across a part? (a) ammeter (b) voltmeter
35. 35.📏 How many kilowatts (kW) is 2050 W? =
36. 36.📏 Voltmeter or ammeter: which one is joined in series? (a) voltmeter (b) ammeter
37. 37.True or false: resistance is measured in watts (W). (a) False (b) True
38. 38.Which of these is measured in amperes (A)? (a) the push of a cell (b) the flow of charge (c) resistance (d) voltage
39. 39.📏 Which unit measures resistance? (a) watt (W) (b) ohm (Ω) (c) ampere (A) (d) volt (V)
40. 40.True or false: voltage is measured in ohms (Ω). (a) True (b) False

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