Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 983 · 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) make 1 ampere? (a) 1000 (b) 10 (c) 100 (d) 60
2. 2.True or false: the ammeter measures voltage. (a) False (b) True
3. 3.📏 How many kilo-ohms (kΩ) is 400 Ω? =
4. 4.📏 Voltmeter or ammeter: which one measures current? (a) ammeter (b) voltmeter
5. 5.True or false: power is measured in ohms (Ω). (a) True (b) False
6. 6.📏 Which unit measures how much a part resists? (a) volt (V) (b) watt (W) (c) ampere (A) (d) ohm (Ω)
7. 7.📏 How many milliamperes (mA) is 1.65 A?
8. 8.Which of these is measured in amperes (A)? (a) resistance (b) energy used each second (c) current (d) how much a part resists
9. 9.📏 Voltmeter or ammeter: which one measures voltage? (a) ammeter (b) voltmeter
10. 10.📏 Voltmeter or ammeter: which one is joined in series? (a) ammeter (b) voltmeter
11. 11.True or false: the ammeter measures current. (a) False (b) True
12. 12.📏 How many kilo-ohms (kΩ) is 1200 Ω? =
13. 13.True or false: resistance is measured in amperes (A). (a) True (b) False
14. 14.📏 In the water-pipe picture of a circuit, current is like … (a) the pipe colour (b) a narrow pipe (c) the water pressure (d) the flow of water
15. 15.True or false: resistance is measured in volts (V). (a) False (b) True
16. 16.Which of these is measured in amperes (A)? (a) power (b) energy used each second (c) voltage (d) the flow of charge
17. 17.True or false: how much a part resists is measured in ohms (Ω). (a) True (b) False
18. 18.📏 Voltmeter or ammeter: which one is joined across a part? (a) ammeter (b) voltmeter
19. 19.📏 How many kilowatts (kW) is 2750 W? =
20. 20.📏 How many amperes (A) is 450 mA? =
21. 21.📏 Which unit measures the push of a cell? (a) ampere (A) (b) volt (V) (c) watt (W) (d) ohm (Ω)
22. 22.📏 Which unit measures power? (a) ohm (Ω) (b) ampere (A) (c) watt (W) (d) volt (V)
23. 23.True or false: the ammeter is joined across a part. (a) False (b) True
24. 24.Which of these is measured in watts (W)? (a) the flow of charge (b) current (c) resistance (d) power
25. 25.📏 How many kilowatts (kW) is 2550 W? =
26. 26.📏 In the water-pipe picture of a circuit, resistance is like … (a) a bigger tank (b) a narrow pipe (c) the flow of water (d) the water pressure
27. 27.📏 Which unit measures current? (a) watt (W) (b) ampere (A) (c) volt (V) (d) ohm (Ω)
28. 28.📏 How many watts (W) is 0.1 kW?
29. 29.📏 How many watts (W) is 4.9 kW?
30. 30.📏 How many kilowatts (kW) is 100 W? =
31. 31.True or false: how much a part resists is measured in amperes (A). (a) False (b) True
32. 32.📏 In the water-pipe picture of a circuit, voltage is like … (a) the pipe colour (b) the water tank lid (c) the water pressure (d) the tap handle
33. 33.📏 How many watts (W) is 1.6 kW?
34. 34.📏 How many watts (W) is 2 kW?
35. 35.📏 How many amperes (A) is 1340 mA? =
36. 36.📏 How many amperes (A) is 2540 mA? =
37. 37.Which of these is measured in volts (V)? (a) how much a part resists (b) resistance (c) the push of a cell (d) power
38. 38.True or false: the push of a cell is measured in watts (W). (a) True (b) False
39. 39.Which of these is measured in volts (V)? (a) the flow of charge (b) how much a part resists (c) energy used each second (d) voltage
40. 40.True or false: the flow of charge is measured in volts (V). (a) True (b) False

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