Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 343 · 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 push of a cell is measured in volts (V). (a) True (b) False
2. 2.True or false: the ammeter measures current. (a) False (b) True
3. 3.📏 Which unit measures power? (a) volt (V) (b) watt (W) (c) ampere (A) (d) ohm (Ω)
4. 4.📏 Which unit measures the push of a cell? (a) watt (W) (b) ohm (Ω) (c) volt (V) (d) ampere (A)
5. 5.📏 How many watts (W) is 1.3 kW?
6. 6.Which of these is measured in amperes (A)? (a) energy used each second (b) voltage (c) the flow of charge (d) how much a part resists
7. 7.Which of these is measured in ohms (Ω)? (a) current (b) resistance (c) power (d) the flow of charge
8. 8.📏 How many milliamperes (mA) make 1 ampere? (a) 100 (b) 1000 (c) 60 (d) 10
9. 9.True or false: energy used each second is measured in amperes (A). (a) True (b) False
10. 10.True or false: the ammeter is joined across a part. (a) False (b) True
11. 11.True or false: the push of a cell is measured in watts (W). (a) False (b) True
12. 12.Which of these is measured in watts (W)? (a) resistance (b) power (c) the push of a cell (d) how much a part resists
13. 13.📏 In the water-pipe picture of a circuit, voltage is like … (a) the tap handle (b) the water tank lid (c) the water pressure (d) the pipe colour
14. 14.📏 In the water-pipe picture of a circuit, current is like … (a) the water pressure (b) the flow of water (c) a narrow pipe (d) the pipe colour
15. 15.True or false: the voltmeter measures current. (a) True (b) False
16. 16.📏 Which unit measures how much a part resists? (a) watt (W) (b) ampere (A) (c) volt (V) (d) ohm (Ω)
17. 17.📏 Which unit measures voltage? (a) volt (V) (b) watt (W) (c) ohm (Ω) (d) ampere (A)
18. 18.📏 In the water-pipe picture of a circuit, resistance is like … (a) the water pressure (b) a bigger tank (c) a narrow pipe (d) the flow of water
19. 19.📏 How many kilo-ohms (kΩ) is 8200 Ω? =
20. 20.📏 How many milliamperes (mA) is 1.75 A?
21. 21.📏 How many kilowatts (kW) is 3000 W? =
22. 22.True or false: the ammeter measures voltage. (a) True (b) False
23. 23.True or false: the voltmeter is joined across a part. (a) False (b) True
24. 24.📏 Voltmeter or ammeter: which one measures voltage? (a) ammeter (b) voltmeter
25. 25.📏 Which unit measures current? (a) ohm (Ω) (b) ampere (A) (c) watt (W) (d) volt (V)
26. 26.Which of these is measured in volts (V)? (a) the flow of charge (b) energy used each second (c) power (d) voltage
27. 27.📏 Voltmeter or ammeter: which one is joined across a part? (a) ammeter (b) voltmeter
28. 28.True or false: voltage is measured in volts (V). (a) True (b) False
29. 29.📏 How many kilowatts (kW) is 350 W? =
30. 30.True or false: the ammeter is joined in series. (a) False (b) True
31. 31.Which of these is measured in volts (V)? (a) resistance (b) power (c) how much a part resists (d) the push of a cell
32. 32.📏 Which unit measures energy used each second? (a) watt (W) (b) ampere (A) (c) volt (V) (d) ohm (Ω)
33. 33.Which of these is measured in ohms (Ω)? (a) how much a part resists (b) the push of a cell (c) current (d) power
34. 34.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 10 (b) 100 (c) 1000 (d) 1024
35. 35.📏 How many amperes (A) is 1690 mA? =
36. 36.True or false: the voltmeter is joined in series. (a) False (b) True
37. 37.📏 Voltmeter or ammeter: which one is joined in series? (a) ammeter (b) voltmeter
38. 38.📏 How many milliamperes (mA) is 0.87 A?
39. 39.📏 Voltmeter or ammeter: which one measures current? (a) ammeter (b) voltmeter
40. 40.📏 How many milliamperes (mA) is 1.17 A?

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