Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 813 · 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) the flow of charge (b) energy used each second (c) the push of a cell (d) current
2. 2.📏 Voltmeter or ammeter: which one measures current? (a) ammeter (b) voltmeter
3. 3.Which of these is measured in amperes (A)? (a) energy used each second (b) current (c) power (d) resistance
4. 4.True or false: power is measured in watts (W). (a) False (b) True
5. 5.📏 Voltmeter or ammeter: which one measures voltage? (a) voltmeter (b) ammeter
6. 6.📏 How many milliamperes (mA) is 2.53 A?
7. 7.Which of these is measured in volts (V)? (a) energy used each second (b) current (c) voltage (d) power
8. 8.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 100 (b) 1000 (c) 10 (d) 1024
9. 9.True or false: the ammeter measures current. (a) False (b) True
10. 10.📏 How many ohms (Ω) is 5.5 kΩ?
11. 11.📏 In the water-pipe picture of a circuit, voltage is like … (a) the water pressure (b) the tap handle (c) the water tank lid (d) the pipe colour
12. 12.📏 How many kilowatts (kW) is 2150 W? =
13. 13.📏 Which unit measures the flow of charge? (a) volt (V) (b) ohm (Ω) (c) ampere (A) (d) watt (W)
14. 14.True or false: the push of a cell is measured in volts (V). (a) False (b) True
15. 15.True or false: how much a part resists is measured in watts (W). (a) False (b) True
16. 16.📏 In the water-pipe picture of a circuit, current is like … (a) the pipe colour (b) the water pressure (c) a narrow pipe (d) the flow of water
17. 17.True or false: the voltmeter measures voltage. (a) False (b) True
18. 18.📏 In the water-pipe picture of a circuit, resistance is like … (a) the flow of water (b) a bigger tank (c) the water pressure (d) a narrow pipe
19. 19.True or false: how much a part resists is measured in ohms (Ω). (a) True (b) False
20. 20.📏 How many ohms (Ω) is 1.8 kΩ?
21. 21.True or false: the flow of charge is measured in ohms (Ω). (a) True (b) False
22. 22.📏 How many kilo-ohms (kΩ) is 300 Ω? =
23. 23.Which of these is measured in ohms (Ω)? (a) power (b) how much a part resists (c) voltage (d) energy used each second
24. 24.Which of these is measured in ohms (Ω)? (a) power (b) resistance (c) the push of a cell (d) current
25. 25.True or false: the ammeter is joined in series. (a) False (b) True
26. 26.📏 How many milliamperes (mA) is 2.7 A?
27. 27.Which of these is measured in watts (W)? (a) power (b) the flow of charge (c) how much a part resists (d) current
28. 28.📏 How many amperes (A) is 1200 mA? =
29. 29.True or false: how much a part resists is measured in volts (V). (a) False (b) True
30. 30.📏 How many milliamperes (mA) make 1 ampere? (a) 100 (b) 1000 (c) 10 (d) 60
31. 31.📏 How many ohms (Ω) is 7.2 kΩ?
32. 32.📏 How many kilowatts (kW) is 1850 W? =
33. 33.📏 How many amperes (A) is 2630 mA? =
34. 34.📏 How many watts (W) is 4.3 kW?
35. 35.📏 How many kilowatts (kW) is 1000 W? =
36. 36.True or false: the flow of charge is measured in amperes (A). (a) True (b) False
37. 37.📏 How many amperes (A) is 2790 mA? =
38. 38.📏 How many kilowatts (kW) is 1200 W? =
39. 39.True or false: resistance is measured in watts (W). (a) False (b) True
40. 40.True or false: voltage is measured in watts (W). (a) False (b) True

Free electronics lessons, practice and worksheets at talentjr.in/electronics-for-kids