Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 481 · 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 watts (W) is 2.4 kW?
2. 2.True or false: the voltmeter measures current. (a) True (b) False
3. 3.📏 How many kilowatts (kW) is 2600 W? =
4. 4.📏 Voltmeter or ammeter: which one measures current? (a) voltmeter (b) ammeter
5. 5.📏 Which unit measures the push of a cell? (a) volt (V) (b) ohm (Ω) (c) ampere (A) (d) watt (W)
6. 6.📏 In the water-pipe picture of a circuit, resistance is like … (a) the flow of water (b) the water pressure (c) a narrow pipe (d) a bigger tank
7. 7.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 1000 (b) 10 (c) 100 (d) 1024
8. 8.📏 How many amperes (A) is 1000 mA? =
9. 9.True or false: energy used each second is measured in amperes (A). (a) True (b) False
10. 10.Which of these is measured in ohms (Ω)? (a) how much a part resists (b) voltage (c) current (d) power
11. 11.📏 How many amperes (A) is 1190 mA? =
12. 12.📏 How many amperes (A) is 2520 mA? =
13. 13.📏 Which unit measures energy used each second? (a) ohm (Ω) (b) volt (V) (c) ampere (A) (d) watt (W)
14. 14.Which of these is measured in volts (V)? (a) current (b) the push of a cell (c) energy used each second (d) resistance
15. 15.📏 How many kilo-ohms (kΩ) is 6200 Ω? =
16. 16.📏 How many milliamperes (mA) is 1.08 A?
17. 17.📏 How many kilo-ohms (kΩ) is 1500 Ω? =
18. 18.True or false: voltage is measured in ohms (Ω). (a) True (b) False
19. 19.True or false: the voltmeter is joined in series. (a) True (b) False
20. 20.📏 Which unit measures how much a part resists? (a) ohm (Ω) (b) volt (V) (c) ampere (A) (d) watt (W)
21. 21.True or false: voltage is measured in watts (W). (a) False (b) True
22. 22.📏 How many milliamperes (mA) make 1 ampere? (a) 100 (b) 1000 (c) 10 (d) 60
23. 23.📏 Which unit measures the flow of charge? (a) ohm (Ω) (b) watt (W) (c) volt (V) (d) ampere (A)
24. 24.Which of these is measured in amperes (A)? (a) the push of a cell (b) power (c) current (d) how much a part resists
25. 25.📏 How many kilowatts (kW) is 50 W? =
26. 26.True or false: the voltmeter measures voltage. (a) False (b) True
27. 27.Which of these is measured in volts (V)? (a) resistance (b) current (c) energy used each second (d) voltage
28. 28.📏 How many kilowatts (kW) is 1450 W? =
29. 29.📏 How many ohms (Ω) is 8.6 kΩ?
30. 30.📏 In the water-pipe picture of a circuit, current is like … (a) the pipe colour (b) the water pressure (c) a narrow pipe (d) the flow of water
31. 31.📏 Which unit measures voltage? (a) volt (V) (b) watt (W) (c) ampere (A) (d) ohm (Ω)
32. 32.Which of these is measured in amperes (A)? (a) voltage (b) the flow of charge (c) the push of a cell (d) how much a part resists
33. 33.📏 How many milliamperes (mA) is 0.11 A?
34. 34.True or false: the ammeter measures voltage. (a) False (b) True
35. 35.Which of these is measured in ohms (Ω)? (a) power (b) resistance (c) voltage (d) the push of a cell
36. 36.📏 How many ohms (Ω) is 3.8 kΩ?
37. 37.Which of these is measured in watts (W)? (a) resistance (b) voltage (c) power (d) how much a part resists
38. 38.📏 How many kilowatts (kW) is 2800 W? =
39. 39.📏 How many ohms (Ω) is 2.5 kΩ?
40. 40.📏 How many kilowatts (kW) is 4300 W? =

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