Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 379 · 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: the ammeter measures voltage. (a) False (b) True
2. 2.Which of these is measured in ohms (Ω)? (a) how much a part resists (b) energy used each second (c) current (d) the flow of charge
3. 3.📏 Which unit measures the push of a cell? (a) volt (V) (b) ohm (Ω) (c) watt (W) (d) ampere (A)
4. 4.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 100 (b) 1024 (c) 10 (d) 1000
5. 5.📏 Voltmeter or ammeter: which one is joined across a part? (a) voltmeter (b) ammeter
6. 6.Which of these is measured in amperes (A)? (a) voltage (b) energy used each second (c) power (d) the flow of charge
7. 7.📏 How many milliamperes (mA) is 0.37 A?
8. 8.📏 How many milliamperes (mA) is 0.49 A?
9. 9.📏 Which unit measures the flow of charge? (a) ohm (Ω) (b) ampere (A) (c) watt (W) (d) volt (V)
10. 10.True or false: the push of a cell is measured in volts (V). (a) True (b) False
11. 11.📏 How many milliamperes (mA) is 2.81 A?
12. 12.True or false: the ammeter is joined in series. (a) False (b) True
13. 13.📏 How many milliamperes (mA) is 1.03 A?
14. 14.📏 How many kilowatts (kW) is 1200 W? =
15. 15.True or false: current is measured in amperes (A). (a) False (b) True
16. 16.Which of these is measured in ohms (Ω)? (a) the flow of charge (b) resistance (c) power (d) voltage
17. 17.True or false: current is measured in volts (V). (a) True (b) False
18. 18.True or false: current is measured in ohms (Ω). (a) True (b) False
19. 19.📏 Voltmeter or ammeter: which one is joined in series? (a) ammeter (b) voltmeter
20. 20.True or false: how much a part resists is measured in volts (V). (a) True (b) False
21. 21.📏 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
22. 22.True or false: the ammeter is joined across a part. (a) True (b) False
23. 23.True or false: voltage is measured in volts (V). (a) True (b) False
24. 24.📏 How many kilowatts (kW) is 2750 W? =
25. 25.📏 Which unit measures voltage? (a) watt (W) (b) ampere (A) (c) volt (V) (d) ohm (Ω)
26. 26.📏 Which unit measures energy used each second? (a) volt (V) (b) watt (W) (c) ohm (Ω) (d) ampere (A)
27. 27.📏 How many milliamperes (mA) is 0.33 A?
28. 28.True or false: power is measured in volts (V). (a) True (b) False
29. 29.📏 In the water-pipe picture of a circuit, voltage is like … (a) the water pressure (b) the pipe colour (c) the water tank lid (d) the tap handle
30. 30.True or false: resistance is measured in watts (W). (a) False (b) True
31. 31.📏 How many kilo-ohms (kΩ) is 2700 Ω? =
32. 32.📏 How many kilo-ohms (kΩ) is 9100 Ω? =
33. 33.True or false: the voltmeter is joined in series. (a) False (b) True
34. 34.True or false: current is measured in watts (W). (a) True (b) False
35. 35.Which of these is measured in amperes (A)? (a) energy used each second (b) voltage (c) power (d) current
36. 36.📏 Which unit measures how much a part resists? (a) volt (V) (b) ampere (A) (c) ohm (Ω) (d) watt (W)
37. 37.📏 How many ohms (Ω) is 5.8 kΩ?
38. 38.📏 How many milliamperes (mA) is 1.09 A?
39. 39.📏 Voltmeter or ammeter: which one measures current? (a) ammeter (b) voltmeter
40. 40.📏 In the water-pipe picture of a circuit, resistance is like … (a) the water pressure (b) a narrow pipe (c) the flow of water (d) a bigger tank

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