Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 34 · 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.📏 In the water-pipe picture of a circuit, voltage is like … (a) the water tank lid (b) the tap handle (c) the water pressure (d) the pipe colour
2. 2.True or false: power is measured in watts (W). (a) False (b) True
3. 3.📏 Which unit measures the flow of charge? (a) watt (W) (b) ampere (A) (c) volt (V) (d) ohm (Ω)
4. 4.Which of these is measured in volts (V)? (a) the flow of charge (b) how much a part resists (c) resistance (d) voltage
5. 5.📏 Voltmeter or ammeter: which one measures voltage? (a) voltmeter (b) ammeter
6. 6.📏 Which unit measures current? (a) ohm (Ω) (b) volt (V) (c) watt (W) (d) ampere (A)
7. 7.📏 In the water-pipe picture of a circuit, current is like … (a) the water pressure (b) a narrow pipe (c) the pipe colour (d) the flow of water
8. 8.📏 Voltmeter or ammeter: which one is joined in series? (a) ammeter (b) voltmeter
9. 9.📏 How many kilo-ohms (kΩ) is 5800 Ω? =
10. 10.📏 How many watts (W) is 0.2 kW?
11. 11.📏 How many kilowatts (kW) is 150 W? =
12. 12.📏 How many amperes (A) is 2050 mA? =
13. 13.Which of these is measured in watts (W)? (a) how much a part resists (b) current (c) energy used each second (d) the push of a cell
14. 14.True or false: the push of a cell is measured in amperes (A). (a) True (b) False
15. 15.📏 How many milliamperes (mA) make 1 ampere? (a) 60 (b) 10 (c) 1000 (d) 100
16. 16.📏 Voltmeter or ammeter: which one is joined across a part? (a) voltmeter (b) ammeter
17. 17.📏 How many milliamperes (mA) is 2.64 A?
18. 18.📏 How many milliamperes (mA) is 1.18 A?
19. 19.📏 How many amperes (A) is 2170 mA? =
20. 20.📏 How many milliamperes (mA) is 0.53 A?
21. 21.📏 How many amperes (A) is 680 mA? =
22. 22.True or false: the flow of charge is measured in volts (V). (a) True (b) False
23. 23.True or false: the voltmeter is joined across a part. (a) False (b) True
24. 24.📏 Which unit measures voltage? (a) ohm (Ω) (b) watt (W) (c) ampere (A) (d) volt (V)
25. 25.Which of these is measured in ohms (Ω)? (a) the push of a cell (b) current (c) the flow of charge (d) resistance
26. 26.📏 How many kilowatts (kW) is 350 W? =
27. 27.Which of these is measured in amperes (A)? (a) how much a part resists (b) current (c) energy used each second (d) resistance
28. 28.Which of these is measured in volts (V)? (a) the push of a cell (b) resistance (c) energy used each second (d) how much a part resists
29. 29.📏 How many amperes (A) is 2260 mA? =
30. 30.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 1024 (b) 100 (c) 10 (d) 1000
31. 31.📏 How many milliamperes (mA) is 1.9 A?
32. 32.📏 Which unit measures power? (a) watt (W) (b) volt (V) (c) ampere (A) (d) ohm (Ω)
33. 33.📏 How many watts (W) is 0.7 kW?
34. 34.True or false: the push of a cell is measured in volts (V). (a) True (b) False
35. 35.📏 How many kilo-ohms (kΩ) is 9100 Ω? =
36. 36.📏 How many kilowatts (kW) is 2350 W? =
37. 37.📏 How many kilo-ohms (kΩ) is 9500 Ω? =
38. 38.True or false: resistance is measured in ohms (Ω). (a) True (b) False
39. 39.Which of these is measured in amperes (A)? (a) energy used each second (b) the flow of charge (c) power (d) how much a part resists
40. 40.📏 How many milliamperes (mA) is 0.75 A?

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