Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 195 · 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.Which of these is measured in ohms (Ω)? (a) power (b) current (c) the flow of charge (d) resistance
2. 2.True or false: current is measured in volts (V). (a) False (b) True
3. 3.📏 Which unit measures the push of a cell? (a) watt (W) (b) ampere (A) (c) volt (V) (d) ohm (Ω)
4. 4.📏 Which unit measures resistance? (a) ampere (A) (b) ohm (Ω) (c) volt (V) (d) watt (W)
5. 5.📏 Voltmeter or ammeter: which one is joined in series? (a) ammeter (b) voltmeter
6. 6.📏 How many milliamperes (mA) make 1 ampere? (a) 10 (b) 60 (c) 1000 (d) 100
7. 7.True or false: the ammeter measures voltage. (a) True (b) False
8. 8.Which of these is measured in ohms (Ω)? (a) the push of a cell (b) how much a part resists (c) the flow of charge (d) power
9. 9.📏 How many kilo-ohms (kΩ) is 2200 Ω? =
10. 10.True or false: the flow of charge is measured in amperes (A). (a) True (b) False
11. 11.Which of these is measured in watts (W)? (a) the push of a cell (b) how much a part resists (c) power (d) the flow of charge
12. 12.📏 Voltmeter or ammeter: which one is joined across a part? (a) voltmeter (b) ammeter
13. 13.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 1024 (b) 10 (c) 1000 (d) 100
14. 14.📏 Voltmeter or ammeter: which one measures voltage? (a) voltmeter (b) ammeter
15. 15.📏 In the water-pipe picture of a circuit, voltage is like … (a) the water tank lid (b) the tap handle (c) the pipe colour (d) the water pressure
16. 16.📏 How many kilowatts (kW) is 1650 W? =
17. 17.True or false: the voltmeter is joined in series. (a) True (b) False
18. 18.Which of these is measured in volts (V)? (a) the flow of charge (b) resistance (c) current (d) voltage
19. 19.Which of these is measured in amperes (A)? (a) the push of a cell (b) resistance (c) energy used each second (d) the flow of charge
20. 20.📏 How many kilowatts (kW) is 450 W? =
21. 21.📏 How many amperes (A) is 250 mA? =
22. 22.📏 Voltmeter or ammeter: which one measures current? (a) ammeter (b) voltmeter
23. 23.True or false: voltage is measured in watts (W). (a) True (b) False
24. 24.Which of these is measured in watts (W)? (a) resistance (b) the flow of charge (c) the push of a cell (d) energy used each second
25. 25.📏 In the water-pipe picture of a circuit, resistance is like … (a) a bigger tank (b) the flow of water (c) the water pressure (d) a narrow pipe
26. 26.True or false: resistance is measured in ohms (Ω). (a) True (b) False
27. 27.📏 Which unit measures the flow of charge? (a) ampere (A) (b) ohm (Ω) (c) volt (V) (d) watt (W)
28. 28.📏 How many watts (W) is 2.3 kW?
29. 29.Which of these is measured in amperes (A)? (a) the push of a cell (b) voltage (c) how much a part resists (d) current
30. 30.True or false: the ammeter is joined across a part. (a) False (b) True
31. 31.True or false: energy used each second is measured in watts (W). (a) False (b) True
32. 32.True or false: the voltmeter measures voltage. (a) False (b) True
33. 33.📏 How many kilo-ohms (kΩ) is 5900 Ω? =
34. 34.📏 How many ohms (Ω) is 8.8 kΩ?
35. 35.📏 How many amperes (A) is 2200 mA? =
36. 36.📏 How many kilowatts (kW) is 1400 W? =
37. 37.True or false: the push of a cell is measured in ohms (Ω). (a) True (b) False
38. 38.📏 How many kilowatts (kW) is 2250 W? =
39. 39.📏 How many milliamperes (mA) is 2.32 A?
40. 40.True or false: the ammeter measures current. (a) True (b) False

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