Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 909 · 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.📏 Voltmeter or ammeter: which one is joined across a part? (a) ammeter (b) voltmeter
2. 2.Which of these is measured in volts (V)? (a) how much a part resists (b) the push of a cell (c) the flow of charge (d) resistance
3. 3.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 1024 (b) 100 (c) 10 (d) 1000
4. 4.📏 Which unit measures voltage? (a) volt (V) (b) ohm (Ω) (c) watt (W) (d) ampere (A)
5. 5.📏 How many kilo-ohms (kΩ) is 7900 Ω? =
6. 6.Which of these is measured in watts (W)? (a) energy used each second (b) voltage (c) the push of a cell (d) the flow of charge
7. 7.True or false: how much a part resists is measured in volts (V). (a) True (b) False
8. 8.Which of these is measured in volts (V)? (a) voltage (b) the flow of charge (c) resistance (d) energy used each second
9. 9.📏 Voltmeter or ammeter: which one is joined in series? (a) ammeter (b) voltmeter
10. 10.Which of these is measured in amperes (A)? (a) power (b) how much a part resists (c) current (d) resistance
11. 11.📏 How many milliamperes (mA) is 0.59 A?
12. 12.📏 How many kilo-ohms (kΩ) is 4300 Ω? =
13. 13.📏 How many milliamperes (mA) is 0.44 A?
14. 14.📏 How many kilowatts (kW) is 4500 W? =
15. 15.📏 How many ohms (Ω) is 2 kΩ?
16. 16.True or false: energy used each second is measured in watts (W). (a) True (b) False
17. 17.📏 Voltmeter or ammeter: which one measures current? (a) ammeter (b) voltmeter
18. 18.True or false: the voltmeter measures current. (a) True (b) False
19. 19.True or false: energy used each second is measured in ohms (Ω). (a) True (b) False
20. 20.True or false: energy used each second is measured in amperes (A). (a) True (b) False
21. 21.📏 How many amperes (A) is 1520 mA? =
22. 22.📏 Which unit measures how much a part resists? (a) ampere (A) (b) volt (V) (c) watt (W) (d) ohm (Ω)
23. 23.True or false: power is measured in watts (W). (a) False (b) True
24. 24.True or false: resistance is measured in ohms (Ω). (a) True (b) False
25. 25.📏 In the water-pipe picture of a circuit, voltage is like … (a) the tap handle (b) the water tank lid (c) the water pressure (d) the pipe colour
26. 26.📏 How many kilowatts (kW) is 3750 W? =
27. 27.📏 How many milliamperes (mA) is 2.07 A?
28. 28.📏 How many kilowatts (kW) is 1500 W? =
29. 29.📏 How many kilowatts (kW) is 2300 W? =
30. 30.📏 How many ohms (Ω) is 0.3 kΩ?
31. 31.📏 How many kilowatts (kW) is 3200 W? =
32. 32.Which of these is measured in amperes (A)? (a) energy used each second (b) how much a part resists (c) power (d) the flow of charge
33. 33.📏 How many milliamperes (mA) is 2.03 A?
34. 34.True or false: the ammeter is joined in series. (a) True (b) False
35. 35.📏 How many milliamperes (mA) is 1.92 A?
36. 36.Which of these is measured in watts (W)? (a) voltage (b) power (c) resistance (d) current
37. 37.📏 How many amperes (A) is 1330 mA? =
38. 38.True or false: the ammeter is joined across a part. (a) True (b) False
39. 39.📏 In the water-pipe picture of a circuit, current is like … (a) the flow of water (b) a narrow pipe (c) the water pressure (d) the pipe colour
40. 40.📏 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

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