Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 340 · 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) is 1.08 A?
2. 2.Which of these is measured in watts (W)? (a) the push of a cell (b) resistance (c) voltage (d) power
3. 3.📏 How many watts (W) is 4.4 kW?
4. 4.📏 How many kilowatts (kW) is 2250 W? =
5. 5.Which of these is measured in volts (V)? (a) resistance (b) power (c) the push of a cell (d) energy used each second
6. 6.Which of these is measured in amperes (A)? (a) energy used each second (b) the push of a cell (c) how much a part resists (d) current
7. 7.📏 Voltmeter or ammeter: which one measures voltage? (a) ammeter (b) voltmeter
8. 8.True or false: the push of a cell is measured in watts (W). (a) True (b) False
9. 9.📏 Which unit measures the push of a cell? (a) ohm (Ω) (b) ampere (A) (c) volt (V) (d) watt (W)
10. 10.📏 How many ohms (Ω) is 2.3 kΩ?
11. 11.True or false: the voltmeter is joined across a part. (a) False (b) True
12. 12.True or false: the ammeter measures current. (a) True (b) False
13. 13.Which of these is measured in amperes (A)? (a) the flow of charge (b) the push of a cell (c) how much a part resists (d) energy used each second
14. 14.📏 How many amperes (A) is 2110 mA? =
15. 15.True or false: voltage is measured in volts (V). (a) True (b) False
16. 16.📏 How many milliamperes (mA) is 1.9 A?
17. 17.True or false: the ammeter measures voltage. (a) False (b) True
18. 18.📏 In the water-pipe picture of a circuit, resistance is like … (a) the flow of water (b) a narrow pipe (c) a bigger tank (d) the water pressure
19. 19.True or false: the voltmeter measures voltage. (a) True (b) False
20. 20.📏 How many kilo-ohms (kΩ) is 9700 Ω? =
21. 21.Which of these is measured in ohms (Ω)? (a) voltage (b) energy used each second (c) how much a part resists (d) the flow of charge
22. 22.📏 Voltmeter or ammeter: which one is joined in series? (a) voltmeter (b) ammeter
23. 23.📏 How many kilo-ohms (kΩ) is 1400 Ω? =
24. 24.True or false: the ammeter is joined across a part. (a) True (b) False
25. 25.📏 Voltmeter or ammeter: which one measures current? (a) ammeter (b) voltmeter
26. 26.📏 How many watts (W) is 0.8 kW?
27. 27.📏 How many ohms (Ω) is 3.7 kΩ?
28. 28.Which of these is measured in volts (V)? (a) energy used each second (b) voltage (c) power (d) how much a part resists
29. 29.True or false: the flow of charge is measured in ohms (Ω). (a) True (b) False
30. 30.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 1000 (b) 100 (c) 1024 (d) 10
31. 31.True or false: the push of a cell is measured in amperes (A). (a) True (b) False
32. 32.📏 How many watts (W) is 1.7 kW?
33. 33.📏 How many kilowatts (kW) is 2650 W? =
34. 34.📏 How many milliamperes (mA) is 0.96 A?
35. 35.📏 In the water-pipe picture of a circuit, current is like … (a) a narrow pipe (b) the water pressure (c) the pipe colour (d) the flow of water
36. 36.Which of these is measured in ohms (Ω)? (a) current (b) the push of a cell (c) resistance (d) voltage
37. 37.📏 How many amperes (A) is 2830 mA? =
38. 38.📏 How many watts (W) is 0.9 kW?
39. 39.📏 How many amperes (A) is 2140 mA? =
40. 40.True or false: the ammeter is joined in series. (a) False (b) True

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