Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 395 · 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, current is like … (a) the flow of water (b) a narrow pipe (c) the pipe colour (d) the water pressure
2. 2.True or false: the voltmeter measures voltage. (a) False (b) True
3. 3.Which of these is measured in watts (W)? (a) energy used each second (b) voltage (c) resistance (d) current
4. 4.True or false: the ammeter is joined across a part. (a) False (b) True
5. 5.📏 How many ohms (Ω) is 8.8 kΩ?
6. 6.📏 How many milliamperes (mA) make 1 ampere? (a) 60 (b) 10 (c) 1000 (d) 100
7. 7.True or false: the push of a cell is measured in amperes (A). (a) False (b) True
8. 8.📏 In the water-pipe picture of a circuit, resistance is like … (a) a narrow pipe (b) the flow of water (c) the water pressure (d) a bigger tank
9. 9.📏 How many kilo-ohms (kΩ) is 4900 Ω? =
10. 10.Which of these is measured in watts (W)? (a) how much a part resists (b) resistance (c) voltage (d) power
11. 11.📏 How many watts (W) is 2 kW?
12. 12.True or false: the ammeter measures voltage. (a) False (b) True
13. 13.Which of these is measured in volts (V)? (a) the push of a cell (b) energy used each second (c) current (d) the flow of charge
14. 14.True or false: current is measured in amperes (A). (a) True (b) False
15. 15.📏 Voltmeter or ammeter: which one is joined across a part? (a) ammeter (b) voltmeter
16. 16.📏 How many kilo-ohms (kΩ) is 1000 Ω? =
17. 17.True or false: the voltmeter measures current. (a) False (b) True
18. 18.📏 How many milliamperes (mA) is 1.24 A?
19. 19.Which of these is measured in volts (V)? (a) energy used each second (b) voltage (c) how much a part resists (d) power
20. 20.📏 Which unit measures voltage? (a) volt (V) (b) ohm (Ω) (c) ampere (A) (d) watt (W)
21. 21.True or false: the flow of charge is measured in amperes (A). (a) False (b) True
22. 22.True or false: how much a part resists is measured in volts (V). (a) True (b) False
23. 23.True or false: the flow of charge is measured in ohms (Ω). (a) True (b) False
24. 24.📏 How many ohms (Ω) is 3.3 kΩ?
25. 25.📏 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
26. 26.📏 How many kilo-ohms (kΩ) is 5100 Ω? =
27. 27.📏 How many kilowatts (kW) is 1600 W? =
28. 28.📏 How many ohms (Ω) is 8.9 kΩ?
29. 29.📏 How many watts (W) is 4.6 kW?
30. 30.📏 How many watts (W) is 1.3 kW?
31. 31.📏 How many amperes (A) is 1850 mA? =
32. 32.📏 Voltmeter or ammeter: which one is joined in series? (a) ammeter (b) voltmeter
33. 33.📏 Which unit measures the push of a cell? (a) volt (V) (b) ohm (Ω) (c) watt (W) (d) ampere (A)
34. 34.True or false: resistance is measured in watts (W). (a) True (b) False
35. 35.📏 How many amperes (A) is 2350 mA? =
36. 36.📏 How many amperes (A) is 2000 mA? =
37. 37.📏 Which unit measures the flow of charge? (a) ohm (Ω) (b) volt (V) (c) watt (W) (d) ampere (A)
38. 38.📏 How many kilo-ohms (kΩ) is 600 Ω? =
39. 39.True or false: power is measured in volts (V). (a) False (b) True
40. 40.📏 How many kilowatts (kW) is 1250 W? =

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