Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 238 · 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 0.3 kW?
2. 2.Which of these is measured in ohms (Ω)? (a) the push of a cell (b) resistance (c) voltage (d) current
3. 3.📏 Which unit measures power? (a) watt (W) (b) ampere (A) (c) ohm (Ω) (d) volt (V)
4. 4.📏 How many ohms (Ω) is 5.3 kΩ?
5. 5.📏 How many kilowatts (kW) is 3950 W? =
6. 6.True or false: current is measured in watts (W). (a) True (b) False
7. 7.True or false: current is measured in amperes (A). (a) False (b) True
8. 8.Which of these is measured in amperes (A)? (a) resistance (b) the flow of charge (c) energy used each second (d) voltage
9. 9.📏 How many watts (W) is 0.8 kW?
10. 10.True or false: the voltmeter is joined in series. (a) False (b) True
11. 11.True or false: the voltmeter measures current. (a) False (b) True
12. 12.True or false: energy used each second is measured in watts (W). (a) False (b) True
13. 13.📏 How many ohms (Ω) is 5 kΩ?
14. 14.True or false: the flow of charge is measured in ohms (Ω). (a) True (b) False
15. 15.📏 How many kilo-ohms (kΩ) is 7400 Ω? =
16. 16.Which of these is measured in watts (W)? (a) current (b) the push of a cell (c) power (d) how much a part resists
17. 17.True or false: power is measured in volts (V). (a) True (b) False
18. 18.📏 In the water-pipe picture of a circuit, resistance is like … (a) the flow of water (b) the water pressure (c) a bigger tank (d) a narrow pipe
19. 19.Which of these is measured in amperes (A)? (a) current (b) power (c) energy used each second (d) how much a part resists
20. 20.📏 Voltmeter or ammeter: which one measures voltage? (a) ammeter (b) voltmeter
21. 21.📏 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
22. 22.True or false: the voltmeter measures voltage. (a) False (b) True
23. 23.📏 How many kilo-ohms (kΩ) is 3800 Ω? =
24. 24.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 10 (b) 1000 (c) 100 (d) 1024
25. 25.True or false: the push of a cell is measured in watts (W). (a) False (b) True
26. 26.📏 Voltmeter or ammeter: which one is joined in series? (a) voltmeter (b) ammeter
27. 27.True or false: the push of a cell is measured in volts (V). (a) False (b) True
28. 28.📏 Voltmeter or ammeter: which one measures current? (a) voltmeter (b) ammeter
29. 29.📏 How many amperes (A) is 1970 mA? =
30. 30.📏 In the water-pipe picture of a circuit, current is like … (a) a narrow pipe (b) the water pressure (c) the flow of water (d) the pipe colour
31. 31.Which of these is measured in volts (V)? (a) the push of a cell (b) the flow of charge (c) power (d) how much a part resists
32. 32.📏 How many milliamperes (mA) is 1.76 A?
33. 33.True or false: energy used each second is measured in volts (V). (a) True (b) False
34. 34.True or false: the voltmeter is joined across a part. (a) False (b) True
35. 35.📏 Which unit measures current? (a) volt (V) (b) watt (W) (c) ohm (Ω) (d) ampere (A)
36. 36.📏 How many milliamperes (mA) is 0.26 A?
37. 37.📏 Which unit measures voltage? (a) watt (W) (b) ampere (A) (c) ohm (Ω) (d) volt (V)
38. 38.📏 How many ohms (Ω) is 4.1 kΩ?
39. 39.True or false: the ammeter is joined in series. (a) True (b) False
40. 40.📏 How many watts (W) is 1 kW?

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