Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 349 · 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 pipe colour (b) the water tank lid (c) the tap handle (d) the water pressure
2. 2.📏 How many kilowatts (kW) is 1700 W? =
3. 3.📏 How many milliamperes (mA) is 0.26 A?
4. 4.📏 Which unit measures voltage? (a) volt (V) (b) watt (W) (c) ohm (Ω) (d) ampere (A)
5. 5.📏 Voltmeter or ammeter: which one is joined across a part? (a) voltmeter (b) ammeter
6. 6.📏 In the water-pipe picture of a circuit, current is like … (a) the pipe colour (b) the water pressure (c) a narrow pipe (d) the flow of water
7. 7.📏 How many milliamperes (mA) is 2.91 A?
8. 8.True or false: the voltmeter measures voltage. (a) True (b) False
9. 9.Which of these is measured in amperes (A)? (a) the flow of charge (b) power (c) how much a part resists (d) voltage
10. 10.True or false: the voltmeter is joined in series. (a) False (b) True
11. 11.True or false: the voltmeter measures current. (a) False (b) True
12. 12.📏 Voltmeter or ammeter: which one measures voltage? (a) voltmeter (b) ammeter
13. 13.📏 Which unit measures power? (a) ampere (A) (b) watt (W) (c) volt (V) (d) ohm (Ω)
14. 14.True or false: energy used each second is measured in amperes (A). (a) True (b) False
15. 15.True or false: current is measured in volts (V). (a) True (b) False
16. 16.📏 How many amperes (A) is 2740 mA? =
17. 17.True or false: the flow of charge is measured in amperes (A). (a) True (b) False
18. 18.Which of these is measured in watts (W)? (a) energy used each second (b) the flow of charge (c) voltage (d) resistance
19. 19.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 10 (b) 100 (c) 1024 (d) 1000
20. 20.Which of these is measured in watts (W)? (a) the flow of charge (b) power (c) resistance (d) voltage
21. 21.📏 How many ohms (Ω) is 7.6 kΩ?
22. 22.📏 Which unit measures resistance? (a) watt (W) (b) volt (V) (c) ampere (A) (d) ohm (Ω)
23. 23.📏 How many kilo-ohms (kΩ) is 3300 Ω? =
24. 24.📏 Voltmeter or ammeter: which one is joined in series? (a) ammeter (b) voltmeter
25. 25.📏 Which unit measures the push of a cell? (a) ampere (A) (b) volt (V) (c) watt (W) (d) ohm (Ω)
26. 26.True or false: the ammeter is joined in series. (a) False (b) True
27. 27.Which of these is measured in amperes (A)? (a) power (b) energy used each second (c) the push of a cell (d) current
28. 28.True or false: the push of a cell is measured in volts (V). (a) False (b) True
29. 29.📏 How many kilo-ohms (kΩ) is 6400 Ω? =
30. 30.📏 Voltmeter or ammeter: which one measures current? (a) ammeter (b) voltmeter
31. 31.📏 How many amperes (A) is 1100 mA? =
32. 32.📏 How many milliamperes (mA) is 1.89 A?
33. 33.📏 How many ohms (Ω) is 1.6 kΩ?
34. 34.📏 How many milliamperes (mA) make 1 ampere? (a) 100 (b) 10 (c) 1000 (d) 60
35. 35.📏 How many milliamperes (mA) is 0.09 A?
36. 36.True or false: power is measured in watts (W). (a) False (b) True
37. 37.📏 How many amperes (A) is 360 mA? =
38. 38.Which of these is measured in ohms (Ω)? (a) resistance (b) the flow of charge (c) the push of a cell (d) current
39. 39.True or false: voltage is measured in volts (V). (a) False (b) True
40. 40.Which of these is measured in volts (V)? (a) resistance (b) current (c) voltage (d) how much a part resists

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