Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 793 · 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 ammeter measures voltage. (a) False (b) True
2. 2.📏 Which unit measures current? (a) watt (W) (b) volt (V) (c) ohm (Ω) (d) ampere (A)
3. 3.📏 Voltmeter or ammeter: which one measures current? (a) voltmeter (b) ammeter
4. 4.📏 How many kilowatts (kW) is 1100 W? =
5. 5.Which of these is measured in watts (W)? (a) energy used each second (b) current (c) the flow of charge (d) how much a part resists
6. 6.True or false: the ammeter is joined in series. (a) True (b) False
7. 7.📏 How many milliamperes (mA) is 1.36 A?
8. 8.Which of these is measured in amperes (A)? (a) how much a part resists (b) current (c) the push of a cell (d) voltage
9. 9.Which of these is measured in volts (V)? (a) power (b) resistance (c) how much a part resists (d) the push of a cell
10. 10.Which of these is measured in amperes (A)? (a) voltage (b) the push of a cell (c) the flow of charge (d) resistance
11. 11.True or false: the voltmeter is joined across a part. (a) False (b) True
12. 12.📏 Which unit measures power? (a) ohm (Ω) (b) volt (V) (c) ampere (A) (d) watt (W)
13. 13.True or false: the flow of charge is measured in volts (V). (a) False (b) True
14. 14.📏 In the water-pipe picture of a circuit, resistance is like … (a) a bigger tank (b) the water pressure (c) the flow of water (d) a narrow pipe
15. 15.Which of these is measured in volts (V)? (a) the flow of charge (b) current (c) voltage (d) power
16. 16.📏 How many milliamperes (mA) is 1.91 A?
17. 17.Which of these is measured in ohms (Ω)? (a) the push of a cell (b) voltage (c) the flow of charge (d) resistance
18. 18.True or false: the voltmeter measures current. (a) False (b) True
19. 19.📏 Which unit measures the push of a cell? (a) watt (W) (b) ampere (A) (c) volt (V) (d) ohm (Ω)
20. 20.📏 How many amperes (A) is 2360 mA? =
21. 21.📏 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
22. 22.📏 How many milliamperes (mA) make 1 ampere? (a) 100 (b) 10 (c) 1000 (d) 60
23. 23.📏 Which unit measures how much a part resists? (a) ampere (A) (b) volt (V) (c) ohm (Ω) (d) watt (W)
24. 24.📏 How many kilo-ohms (kΩ) is 7900 Ω? =
25. 25.📏 Voltmeter or ammeter: which one is joined across a part? (a) ammeter (b) voltmeter
26. 26.True or false: resistance is measured in ohms (Ω). (a) True (b) False
27. 27.True or false: the ammeter measures current. (a) False (b) True
28. 28.True or false: energy used each second is measured in watts (W). (a) False (b) True
29. 29.📏 How many kilowatts (kW) is 2050 W? =
30. 30.True or false: the ammeter is joined across a part. (a) True (b) False
31. 31.📏 Voltmeter or ammeter: which one measures voltage? (a) voltmeter (b) ammeter
32. 32.📏 How many ohms (Ω) is 9.9 kΩ?
33. 33.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 100 (b) 10 (c) 1024 (d) 1000
34. 34.📏 How many kilowatts (kW) is 4300 W? =
35. 35.Which of these is measured in ohms (Ω)? (a) the flow of charge (b) how much a part resists (c) the push of a cell (d) current
36. 36.True or false: the voltmeter measures voltage. (a) False (b) True
37. 37.📏 Voltmeter or ammeter: which one is joined in series? (a) ammeter (b) voltmeter
38. 38.📏 In the water-pipe picture of a circuit, current is like … (a) the water pressure (b) the flow of water (c) the pipe colour (d) a narrow pipe
39. 39.True or false: how much a part resists is measured in ohms (Ω). (a) False (b) True
40. 40.📏 How many kilo-ohms (kΩ) is 2500 Ω? =

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