Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 795 · 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.📏 How many milliamperes (mA) is 2.17 A?
2. 2.📏 In the water-pipe picture of a circuit, resistance is like … (a) the water pressure (b) a bigger tank (c) the flow of water (d) a narrow pipe
3. 3.📏 Voltmeter or ammeter: which one measures voltage? (a) ammeter (b) voltmeter
4. 4.📏 How many kilowatts (kW) is 4250 W? =
5. 5.True or false: the ammeter measures current. (a) False (b) True
6. 6.Which of these is measured in volts (V)? (a) how much a part resists (b) current (c) the flow of charge (d) voltage
7. 7.📏 How many kilo-ohms (kΩ) is 800 Ω? =
8. 8.📏 How many kilo-ohms (kΩ) is 4700 Ω? =
9. 9.True or false: resistance is measured in watts (W). (a) False (b) True
10. 10.True or false: power is measured in watts (W). (a) True (b) False
11. 11.📏 Voltmeter or ammeter: which one is joined across a part? (a) voltmeter (b) ammeter
12. 12.True or false: the ammeter measures voltage. (a) True (b) False
13. 13.True or false: current is measured in amperes (A). (a) True (b) False
14. 14.True or false: the ammeter is joined across a part. (a) True (b) False
15. 15.True or false: the voltmeter is joined in series. (a) False (b) True
16. 16.📏 How many kilowatts (kW) is 750 W? =
17. 17.📏 How many kilowatts (kW) is 1950 W? =
18. 18.📏 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
19. 19.📏 How many watts (W) is 3.1 kW?
20. 20.📏 How many milliamperes (mA) make 1 ampere? (a) 60 (b) 100 (c) 1000 (d) 10
21. 21.📏 How many amperes (A) is 440 mA? =
22. 22.📏 Which unit measures power? (a) ampere (A) (b) ohm (Ω) (c) volt (V) (d) watt (W)
23. 23.True or false: the voltmeter measures current. (a) True (b) False
24. 24.Which of these is measured in watts (W)? (a) the push of a cell (b) power (c) voltage (d) the flow of charge
25. 25.Which of these is measured in watts (W)? (a) the push of a cell (b) voltage (c) current (d) energy used each second
26. 26.📏 How many kilo-ohms (kΩ) is 9100 Ω? =
27. 27.Which of these is measured in ohms (Ω)? (a) power (b) how much a part resists (c) energy used each second (d) current
28. 28.📏 In the water-pipe picture of a circuit, current is like … (a) the flow of water (b) the pipe colour (c) the water pressure (d) a narrow pipe
29. 29.📏 How many ohms (Ω) is 0.8 kΩ?
30. 30.📏 Voltmeter or ammeter: which one measures current? (a) voltmeter (b) ammeter
31. 31.📏 How many ohms (Ω) is 2.3 kΩ?
32. 32.True or false: resistance is measured in volts (V). (a) False (b) True
33. 33.Which of these is measured in amperes (A)? (a) current (b) voltage (c) how much a part resists (d) resistance
34. 34.📏 How many amperes (A) is 1990 mA? =
35. 35.📏 How many amperes (A) is 1800 mA? =
36. 36.📏 How many kilo-ohms (kΩ) is 8200 Ω? =
37. 37.Which of these is measured in ohms (Ω)? (a) resistance (b) the flow of charge (c) voltage (d) power
38. 38.True or false: the voltmeter measures voltage. (a) False (b) True
39. 39.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 10 (b) 1000 (c) 1024 (d) 100
40. 40.📏 How many amperes (A) is 1210 mA? =

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