Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 186 · 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.Which of these is measured in amperes (A)? (a) current (b) resistance (c) the push of a cell (d) voltage
2. 2.True or false: the voltmeter measures voltage. (a) False (b) True
3. 3.📏 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
4. 4.📏 How many amperes (A) is 2250 mA? =
5. 5.📏 Which unit measures energy used each second? (a) volt (V) (b) ampere (A) (c) watt (W) (d) ohm (Ω)
6. 6.True or false: the push of a cell is measured in watts (W). (a) False (b) True
7. 7.📏 How many watts (W) is 2.3 kW?
8. 8.📏 How many milliamperes (mA) is 1.49 A?
9. 9.📏 How many watts (W) is 1.4 kW?
10. 10.📏 Which unit measures current? (a) watt (W) (b) volt (V) (c) ampere (A) (d) ohm (Ω)
11. 11.📏 Which unit measures voltage? (a) watt (W) (b) ampere (A) (c) volt (V) (d) ohm (Ω)
12. 12.Which of these is measured in volts (V)? (a) how much a part resists (b) power (c) current (d) the push of a cell
13. 13.True or false: the ammeter measures current. (a) True (b) False
14. 14.📏 How many kilowatts (kW) is 4350 W? =
15. 15.Which of these is measured in watts (W)? (a) energy used each second (b) current (c) voltage (d) the push of a cell
16. 16.📏 Which unit measures the push of a cell? (a) ohm (Ω) (b) ampere (A) (c) volt (V) (d) watt (W)
17. 17.📏 How many milliamperes (mA) make 1 ampere? (a) 60 (b) 10 (c) 1000 (d) 100
18. 18.📏 How many amperes (A) is 2220 mA? =
19. 19.📏 In the water-pipe picture of a circuit, resistance is like … (a) a narrow pipe (b) a bigger tank (c) the flow of water (d) the water pressure
20. 20.True or false: the voltmeter is joined in series. (a) False (b) True
21. 21.Which of these is measured in amperes (A)? (a) how much a part resists (b) the push of a cell (c) the flow of charge (d) power
22. 22.True or false: current is measured in amperes (A). (a) True (b) False
23. 23.Which of these is measured in watts (W)? (a) resistance (b) power (c) voltage (d) the flow of charge
24. 24.📏 How many amperes (A) is 1710 mA? =
25. 25.Which of these is measured in ohms (Ω)? (a) how much a part resists (b) current (c) energy used each second (d) power
26. 26.📏 How many kilowatts (kW) is 5000 W? =
27. 27.True or false: resistance is measured in ohms (Ω). (a) True (b) False
28. 28.📏 How many milliamperes (mA) is 2.31 A?
29. 29.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 100 (b) 1000 (c) 1024 (d) 10
30. 30.📏 Which unit measures power? (a) watt (W) (b) volt (V) (c) ampere (A) (d) ohm (Ω)
31. 31.📏 How many amperes (A) is 1450 mA? =
32. 32.📏 Voltmeter or ammeter: which one is joined in series? (a) ammeter (b) voltmeter
33. 33.📏 Which unit measures the flow of charge? (a) volt (V) (b) ohm (Ω) (c) watt (W) (d) ampere (A)
34. 34.📏 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
35. 35.True or false: the ammeter measures voltage. (a) False (b) True
36. 36.📏 How many watts (W) is 0.8 kW?
37. 37.📏 How many ohms (Ω) is 3 kΩ?
38. 38.📏 How many watts (W) is 2 kW?
39. 39.📏 How many amperes (A) is 410 mA? =
40. 40.📏 How many kilo-ohms (kΩ) is 2300 Ω? =

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