Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 423 · 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.📏 Voltmeter or ammeter: which one measures voltage? (a) ammeter (b) voltmeter
2. 2.True or false: the ammeter measures voltage. (a) False (b) True
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.Which of these is measured in ohms (Ω)? (a) power (b) the flow of charge (c) resistance (d) the push of a cell
5. 5.📏 Which unit measures the push of a cell? (a) ampere (A) (b) volt (V) (c) ohm (Ω) (d) watt (W)
6. 6.📏 Voltmeter or ammeter: which one is joined across a part? (a) ammeter (b) voltmeter
7. 7.📏 How many kilowatts (kW) is 2550 W? =
8. 8.Which of these is measured in amperes (A)? (a) power (b) voltage (c) the push of a cell (d) the flow of charge
9. 9.📏 How many milliamperes (mA) is 0.61 A?
10. 10.📏 Which unit measures how much a part resists? (a) volt (V) (b) ampere (A) (c) ohm (Ω) (d) watt (W)
11. 11.📏 How many amperes (A) is 780 mA? =
12. 12.Which of these is measured in volts (V)? (a) the push of a cell (b) energy used each second (c) how much a part resists (d) current
13. 13.True or false: the ammeter is joined across a part. (a) False (b) True
14. 14.📏 Which unit measures energy used each second? (a) watt (W) (b) ampere (A) (c) volt (V) (d) ohm (Ω)
15. 15.Which of these is measured in amperes (A)? (a) power (b) resistance (c) voltage (d) current
16. 16.📏 Which unit measures resistance? (a) ohm (Ω) (b) watt (W) (c) volt (V) (d) ampere (A)
17. 17.📏 How many kilowatts (kW) is 2400 W? =
18. 18.📏 In the water-pipe picture of a circuit, voltage is like … (a) the pipe colour (b) the tap handle (c) the water pressure (d) the water tank lid
19. 19.True or false: power is measured in watts (W). (a) True (b) False
20. 20.True or false: energy used each second is measured in watts (W). (a) True (b) False
21. 21.Which of these is measured in volts (V)? (a) current (b) resistance (c) voltage (d) energy used each second
22. 22.📏 How many kilo-ohms (kΩ) is 3000 Ω? =
23. 23.📏 How many watts (W) is 4.7 kW?
24. 24.True or false: voltage is measured in volts (V). (a) False (b) True
25. 25.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 100 (b) 10 (c) 1024 (d) 1000
26. 26.📏 How many kilo-ohms (kΩ) is 700 Ω? =
27. 27.📏 How many kilo-ohms (kΩ) is 6000 Ω? =
28. 28.True or false: the voltmeter is joined in series. (a) True (b) False
29. 29.📏 How many kilowatts (kW) is 1150 W? =
30. 30.📏 How many milliamperes (mA) is 0.28 A?
31. 31.True or false: the voltmeter measures current. (a) False (b) True
32. 32.📏 In the water-pipe picture of a circuit, resistance is like … (a) the water pressure (b) a narrow pipe (c) the flow of water (d) a bigger tank
33. 33.📏 Voltmeter or ammeter: which one is joined in series? (a) voltmeter (b) ammeter
34. 34.True or false: how much a part resists is measured in volts (V). (a) False (b) True
35. 35.True or false: the push of a cell is measured in amperes (A). (a) True (b) False
36. 36.📏 How many amperes (A) is 730 mA? =
37. 37.📏 How many milliamperes (mA) make 1 ampere? (a) 100 (b) 1000 (c) 10 (d) 60
38. 38.True or false: the voltmeter measures voltage. (a) True (b) False
39. 39.True or false: current is measured in amperes (A). (a) False (b) True
40. 40.📏 How many ohms (Ω) is 8 kΩ?

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