Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 799 · 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: the flow of charge is measured in amperes (A). (a) True (b) False
2. 2.📏 In the water-pipe picture of a circuit, current is like … (a) a narrow pipe (b) the flow of water (c) the pipe colour (d) the water pressure
3. 3.📏 How many milliamperes (mA) make 1 ampere? (a) 100 (b) 60 (c) 10 (d) 1000
4. 4.📏 How many kilo-ohms (kΩ) is 2300 Ω? =
5. 5.📏 Which unit measures the flow of charge? (a) watt (W) (b) ampere (A) (c) volt (V) (d) ohm (Ω)
6. 6.True or false: the voltmeter is joined across a part. (a) False (b) True
7. 7.True or false: the ammeter measures current. (a) False (b) True
8. 8.📏 Which unit measures the push of a cell? (a) ohm (Ω) (b) watt (W) (c) volt (V) (d) ampere (A)
9. 9.📏 Voltmeter or ammeter: which one measures voltage? (a) voltmeter (b) ammeter
10. 10.Which of these is measured in volts (V)? (a) the push of a cell (b) current (c) energy used each second (d) how much a part resists
11. 11.📏 How many amperes (A) is 1690 mA? =
12. 12.📏 Voltmeter or ammeter: which one is joined across a part? (a) ammeter (b) voltmeter
13. 13.True or false: voltage is measured in amperes (A). (a) False (b) True
14. 14.📏 How many kilowatts (kW) is 650 W? =
15. 15.True or false: the ammeter is joined in series. (a) False (b) True
16. 16.Which of these is measured in amperes (A)? (a) the push of a cell (b) voltage (c) current (d) energy used each second
17. 17.📏 How many kilo-ohms (kΩ) is 3600 Ω? =
18. 18.📏 How many ohms (Ω) is 5.1 kΩ?
19. 19.Which of these is measured in ohms (Ω)? (a) resistance (b) the flow of charge (c) voltage (d) the push of a cell
20. 20.True or false: the ammeter measures voltage. (a) True (b) False
21. 21.True or false: current is measured in ohms (Ω). (a) True (b) False
22. 22.True or false: the voltmeter measures voltage. (a) False (b) True
23. 23.True or false: the ammeter is joined across a part. (a) False (b) True
24. 24.Which of these is measured in watts (W)? (a) voltage (b) the flow of charge (c) energy used each second (d) resistance
25. 25.True or false: current is measured in amperes (A). (a) True (b) False
26. 26.True or false: resistance is measured in volts (V). (a) False (b) True
27. 27.True or false: how much a part resists is measured in ohms (Ω). (a) False (b) True
28. 28.True or false: the voltmeter measures current. (a) False (b) True
29. 29.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 100 (b) 10 (c) 1000 (d) 1024
30. 30.📏 Which unit measures voltage? (a) ampere (A) (b) watt (W) (c) ohm (Ω) (d) volt (V)
31. 31.📏 How many kilo-ohms (kΩ) is 1000 Ω? =
32. 32.📏 In the water-pipe picture of a circuit, voltage is like … (a) the water pressure (b) the water tank lid (c) the pipe colour (d) the tap handle
33. 33.📏 How many kilo-ohms (kΩ) is 5000 Ω? =
34. 34.📏 Which unit measures current? (a) ampere (A) (b) ohm (Ω) (c) watt (W) (d) volt (V)
35. 35.📏 How many amperes (A) is 2930 mA? =
36. 36.📏 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
37. 37.📏 How many milliamperes (mA) is 0.37 A?
38. 38.True or false: power is measured in ohms (Ω). (a) False (b) True
39. 39.📏 How many kilo-ohms (kΩ) is 4300 Ω? =
40. 40.📏 Voltmeter or ammeter: which one measures current? (a) voltmeter (b) ammeter

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