Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 724 · 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 ohms (Ω) is 7.6 kΩ?
2. 2.📏 Voltmeter or ammeter: which one is joined in series? (a) voltmeter (b) ammeter
3. 3.📏 How many kilowatts (kW) is 3950 W? =
4. 4.Which of these is measured in watts (W)? (a) the push of a cell (b) how much a part resists (c) voltage (d) power
5. 5.📏 In the water-pipe picture of a circuit, resistance is like … (a) a bigger tank (b) a narrow pipe (c) the flow of water (d) the water pressure
6. 6.📏 How many kilo-ohms (kΩ) is 2300 Ω? =
7. 7.📏 How many ohms (Ω) is 0.1 kΩ?
8. 8.📏 How many kilo-ohms (kΩ) is 8900 Ω? =
9. 9.True or false: the ammeter measures voltage. (a) True (b) False
10. 10.Which of these is measured in ohms (Ω)? (a) voltage (b) the push of a cell (c) energy used each second (d) how much a part resists
11. 11.Which of these is measured in amperes (A)? (a) energy used each second (b) voltage (c) how much a part resists (d) the flow of charge
12. 12.📏 In the water-pipe picture of a circuit, current is like … (a) a narrow pipe (b) the flow of water (c) the water pressure (d) the pipe colour
13. 13.Which of these is measured in volts (V)? (a) the flow of charge (b) current (c) the push of a cell (d) power
14. 14.📏 How many amperes (A) is 2460 mA? =
15. 15.📏 Which unit measures the flow of charge? (a) ohm (Ω) (b) volt (V) (c) watt (W) (d) ampere (A)
16. 16.True or false: the push of a cell is measured in watts (W). (a) True (b) False
17. 17.📏 Which unit measures current? (a) volt (V) (b) ohm (Ω) (c) ampere (A) (d) watt (W)
18. 18.Which of these is measured in ohms (Ω)? (a) current (b) resistance (c) power (d) energy used each second
19. 19.Which of these is measured in watts (W)? (a) the flow of charge (b) energy used each second (c) how much a part resists (d) the push of a cell
20. 20.True or false: the ammeter measures current. (a) False (b) True
21. 21.📏 How many milliamperes (mA) make 1 ampere? (a) 10 (b) 60 (c) 1000 (d) 100
22. 22.📏 How many kilowatts (kW) is 300 W? =
23. 23.📏 Which unit measures the push of a cell? (a) watt (W) (b) ampere (A) (c) ohm (Ω) (d) volt (V)
24. 24.True or false: the voltmeter is joined in series. (a) True (b) False
25. 25.📏 How many milliamperes (mA) is 0.76 A?
26. 26.📏 How many amperes (A) is 1470 mA? =
27. 27.📏 In the water-pipe picture of a circuit, voltage is like … (a) the tap handle (b) the water tank lid (c) the pipe colour (d) the water pressure
28. 28.📏 How many ohms (Ω) is 2 kΩ?
29. 29.True or false: the flow of charge is measured in amperes (A). (a) True (b) False
30. 30.True or false: voltage is measured in ohms (Ω). (a) True (b) False
31. 31.True or false: voltage is measured in volts (V). (a) True (b) False
32. 32.📏 Voltmeter or ammeter: which one measures voltage? (a) ammeter (b) voltmeter
33. 33.📏 How many kilo-ohms (kΩ) is 6700 Ω? =
34. 34.📏 How many amperes (A) is 1510 mA? =
35. 35.📏 Which unit measures energy used each second? (a) watt (W) (b) ohm (Ω) (c) ampere (A) (d) volt (V)
36. 36.📏 How many milliamperes (mA) is 0.26 A?
37. 37.True or false: energy used each second is measured in ohms (Ω). (a) True (b) False
38. 38.True or false: the ammeter is joined in series. (a) False (b) True
39. 39.Which of these is measured in volts (V)? (a) power (b) voltage (c) resistance (d) current
40. 40.📏 How many amperes (A) is 1200 mA? =

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