Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 713 · 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) False (b) True
2. 2.📏 Which unit measures how much a part resists? (a) ampere (A) (b) volt (V) (c) watt (W) (d) ohm (Ω)
3. 3.📏 How many kilowatts (kW) is 1050 W? =
4. 4.📏 How many kilowatts (kW) is 4000 W? =
5. 5.True or false: the voltmeter is joined across a part. (a) True (b) False
6. 6.📏 In the water-pipe picture of a circuit, resistance is like … (a) a bigger tank (b) the flow of water (c) a narrow pipe (d) the water pressure
7. 7.📏 How many milliamperes (mA) is 2.86 A?
8. 8.📏 How many kilo-ohms (kΩ) is 6200 Ω? =
9. 9.Which of these is measured in volts (V)? (a) energy used each second (b) power (c) the push of a cell (d) the flow of charge
10. 10.📏 In the water-pipe picture of a circuit, voltage is like … (a) the tap handle (b) the water pressure (c) the pipe colour (d) the water tank lid
11. 11.📏 How many amperes (A) is 2620 mA? =
12. 12.📏 How many milliamperes (mA) is 0.47 A?
13. 13.📏 Voltmeter or ammeter: which one measures voltage? (a) ammeter (b) voltmeter
14. 14.Which of these is measured in watts (W)? (a) the flow of charge (b) the push of a cell (c) power (d) current
15. 15.📏 Which unit measures resistance? (a) watt (W) (b) volt (V) (c) ohm (Ω) (d) ampere (A)
16. 16.True or false: voltage is measured in ohms (Ω). (a) True (b) False
17. 17.📏 Voltmeter or ammeter: which one is joined across a part? (a) ammeter (b) voltmeter
18. 18.True or false: energy used each second is measured in watts (W). (a) True (b) False
19. 19.Which of these is measured in amperes (A)? (a) resistance (b) power (c) the push of a cell (d) the flow of charge
20. 20.📏 Voltmeter or ammeter: which one is joined in series? (a) voltmeter (b) ammeter
21. 21.📏 How many kilo-ohms (kΩ) is 5400 Ω? =
22. 22.True or false: resistance is measured in volts (V). (a) True (b) False
23. 23.📏 How many amperes (A) is 870 mA? =
24. 24.True or false: the voltmeter measures current. (a) True (b) False
25. 25.📏 How many kilo-ohms (kΩ) is 8500 Ω? =
26. 26.True or false: the flow of charge is measured in volts (V). (a) True (b) False
27. 27.True or false: the ammeter measures current. (a) False (b) True
28. 28.📏 How many kilowatts (kW) is 2700 W? =
29. 29.📏 How many kilo-ohms (kΩ) is 3800 Ω? =
30. 30.📏 How many ohms (Ω) is 9.2 kΩ?
31. 31.True or false: the push of a cell is measured in ohms (Ω). (a) True (b) False
32. 32.Which of these is measured in ohms (Ω)? (a) energy used each second (b) current (c) how much a part resists (d) power
33. 33.📏 How many watts (W) is 4.2 kW?
34. 34.📏 Which unit measures the flow of charge? (a) ampere (A) (b) ohm (Ω) (c) watt (W) (d) volt (V)
35. 35.📏 How many milliamperes (mA) is 2.45 A?
36. 36.📏 How many amperes (A) is 50 mA? =
37. 37.True or false: the voltmeter measures voltage. (a) False (b) True
38. 38.📏 How many kilo-ohms (kΩ) is 7900 Ω? =
39. 39.True or false: energy used each second is measured in ohms (Ω). (a) True (b) False
40. 40.📏 How many kilowatts (kW) is 1400 W? =

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