Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 825 · 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.True or false: energy used each second is measured in amperes (A). (a) True (b) False
2. 2.True or false: voltage is measured in volts (V). (a) False (b) True
3. 3.📏 How many amperes (A) is 1390 mA? =
4. 4.📏 How many kilo-ohms (kΩ) is 8800 Ω? =
5. 5.Which of these is measured in amperes (A)? (a) power (b) the push of a cell (c) the flow of charge (d) resistance
6. 6.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 100 (b) 10 (c) 1000 (d) 1024
7. 7.📏 How many milliamperes (mA) is 1.04 A?
8. 8.📏 Voltmeter or ammeter: which one is joined in series? (a) voltmeter (b) ammeter
9. 9.Which of these is measured in watts (W)? (a) energy used each second (b) resistance (c) voltage (d) the push of a cell
10. 10.📏 Voltmeter or ammeter: which one measures voltage? (a) voltmeter (b) ammeter
11. 11.True or false: the ammeter is joined in series. (a) True (b) False
12. 12.Which of these is measured in volts (V)? (a) current (b) the flow of charge (c) resistance (d) the push of a cell
13. 13.True or false: resistance is measured in ohms (Ω). (a) False (b) True
14. 14.📏 Which unit measures how much a part resists? (a) watt (W) (b) volt (V) (c) ohm (Ω) (d) ampere (A)
15. 15.📏 Which unit measures the flow of charge? (a) watt (W) (b) volt (V) (c) ampere (A) (d) ohm (Ω)
16. 16.📏 Voltmeter or ammeter: which one measures current? (a) ammeter (b) voltmeter
17. 17.True or false: the ammeter measures current. (a) True (b) False
18. 18.True or false: energy used each second is measured in volts (V). (a) False (b) True
19. 19.📏 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
20. 20.Which of these is measured in volts (V)? (a) the flow of charge (b) how much a part resists (c) resistance (d) voltage
21. 21.📏 In the water-pipe picture of a circuit, voltage is like … (a) the pipe colour (b) the water pressure (c) the water tank lid (d) the tap handle
22. 22.📏 How many milliamperes (mA) is 2.33 A?
23. 23.📏 How many watts (W) is 2 kW?
24. 24.📏 How many kilowatts (kW) is 3000 W? =
25. 25.📏 Which unit measures the push of a cell? (a) watt (W) (b) ampere (A) (c) ohm (Ω) (d) volt (V)
26. 26.📏 Which unit measures resistance? (a) ohm (Ω) (b) ampere (A) (c) watt (W) (d) volt (V)
27. 27.📏 How many amperes (A) is 2360 mA? =
28. 28.True or false: current is measured in amperes (A). (a) False (b) True
29. 29.True or false: the voltmeter is joined in series. (a) True (b) False
30. 30.📏 How many milliamperes (mA) make 1 ampere? (a) 100 (b) 60 (c) 1000 (d) 10
31. 31.📏 How many watts (W) is 1.2 kW?
32. 32.📏 How many amperes (A) is 610 mA? =
33. 33.📏 How many amperes (A) is 2010 mA? =
34. 34.📏 How many amperes (A) is 70 mA? =
35. 35.📏 How many kilo-ohms (kΩ) is 500 Ω? =
36. 36.📏 How many watts (W) is 2.9 kW?
37. 37.True or false: the voltmeter measures current. (a) False (b) True
38. 38.📏 How many kilowatts (kW) is 1950 W? =
39. 39.Which of these is measured in watts (W)? (a) the push of a cell (b) how much a part resists (c) power (d) current
40. 40.True or false: the ammeter measures voltage. (a) True (b) False

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