Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 175 · 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 volts (V)? (a) how much a part resists (b) power (c) resistance (d) voltage
2. 2.Which of these is measured in watts (W)? (a) the push of a cell (b) how much a part resists (c) energy used each second (d) voltage
3. 3.Which of these is measured in volts (V)? (a) power (b) the push of a cell (c) current (d) resistance
4. 4.True or false: the voltmeter is joined across a part. (a) True (b) False
5. 5.True or false: the ammeter measures voltage. (a) False (b) True
6. 6.📏 How many milliamperes (mA) is 1.04 A?
7. 7.True or false: current is measured in amperes (A). (a) True (b) False
8. 8.True or false: the push of a cell is measured in volts (V). (a) False (b) True
9. 9.📏 Which unit measures voltage? (a) ohm (Ω) (b) watt (W) (c) ampere (A) (d) volt (V)
10. 10.Which of these is measured in amperes (A)? (a) the push of a cell (b) how much a part resists (c) voltage (d) the flow of charge
11. 11.📏 In the water-pipe picture of a circuit, resistance is like … (a) a narrow pipe (b) a bigger tank (c) the flow of water (d) the water pressure
12. 12.📏 Which unit measures resistance? (a) watt (W) (b) ohm (Ω) (c) volt (V) (d) ampere (A)
13. 13.📏 Which unit measures power? (a) ampere (A) (b) ohm (Ω) (c) volt (V) (d) watt (W)
14. 14.📏 How many ohms (Ω) is 1.6 kΩ?
15. 15.📏 How many kilowatts (kW) is 1900 W? =
16. 16.True or false: the voltmeter measures current. (a) True (b) False
17. 17.📏 Which unit measures how much a part resists? (a) ampere (A) (b) ohm (Ω) (c) volt (V) (d) watt (W)
18. 18.📏 In the water-pipe picture of a circuit, current is like … (a) a narrow pipe (b) the flow of water (c) the pipe colour (d) the water pressure
19. 19.📏 Voltmeter or ammeter: which one is joined in series? (a) ammeter (b) voltmeter
20. 20.📏 Which unit measures current? (a) ohm (Ω) (b) watt (W) (c) volt (V) (d) ampere (A)
21. 21.📏 How many amperes (A) is 1990 mA? =
22. 22.📏 How many amperes (A) is 1160 mA? =
23. 23.📏 Which unit measures the push of a cell? (a) volt (V) (b) ampere (A) (c) ohm (Ω) (d) watt (W)
24. 24.Which of these is measured in ohms (Ω)? (a) energy used each second (b) current (c) resistance (d) power
25. 25.📏 How many milliamperes (mA) is 1.6 A?
26. 26.📏 Voltmeter or ammeter: which one measures voltage? (a) ammeter (b) voltmeter
27. 27.📏 How many ohms (Ω) is 1.4 kΩ?
28. 28.Which of these is measured in watts (W)? (a) how much a part resists (b) the push of a cell (c) power (d) the flow of charge
29. 29.📏 How many watts (W) is 3.1 kW?
30. 30.True or false: power is measured in watts (W). (a) False (b) True
31. 31.📏 How many ohms (Ω) is 0.9 kΩ?
32. 32.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 1000 (b) 100 (c) 1024 (d) 10
33. 33.📏 How many kilowatts (kW) is 650 W? =
34. 34.📏 In the water-pipe picture of a circuit, voltage is like … (a) the pipe colour (b) the tap handle (c) the water tank lid (d) the water pressure
35. 35.True or false: the ammeter measures current. (a) True (b) False
36. 36.True or false: the voltmeter is joined in series. (a) True (b) False
37. 37.True or false: voltage is measured in watts (W). (a) True (b) False
38. 38.📏 Voltmeter or ammeter: which one measures current? (a) ammeter (b) voltmeter
39. 39.📏 How many ohms (Ω) is 1.2 kΩ?
40. 40.True or false: voltage is measured in amperes (A). (a) False (b) True

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