Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 398 · 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 unit measures the push of a cell? (a) ampere (A) (b) ohm (Ω) (c) watt (W) (d) volt (V)
2. 2.📏 How many kilowatts (kW) is 1200 W? =
3. 3.📏 In the water-pipe picture of a circuit, voltage is like … (a) the water pressure (b) the water tank lid (c) the pipe colour (d) the tap handle
4. 4.True or false: the ammeter measures current. (a) True (b) False
5. 5.📏 How many kilowatts (kW) is 850 W? =
6. 6.📏 Which unit measures how much a part resists? (a) volt (V) (b) ohm (Ω) (c) watt (W) (d) ampere (A)
7. 7.📏 Voltmeter or ammeter: which one is joined across a part? (a) ammeter (b) voltmeter
8. 8.Which of these is measured in watts (W)? (a) power (b) resistance (c) current (d) the flow of charge
9. 9.True or false: voltage is measured in volts (V). (a) True (b) False
10. 10.📏 How many watts (W) is 1.3 kW?
11. 11.True or false: the flow of charge is measured in watts (W). (a) True (b) False
12. 12.📏 Which unit measures the flow of charge? (a) volt (V) (b) watt (W) (c) ampere (A) (d) ohm (Ω)
13. 13.📏 How many milliamperes (mA) make 1 ampere? (a) 10 (b) 60 (c) 1000 (d) 100
14. 14.📏 How many kilo-ohms (kΩ) is 10000 Ω? =
15. 15.📏 Voltmeter or ammeter: which one measures current? (a) voltmeter (b) ammeter
16. 16.True or false: the ammeter measures voltage. (a) False (b) True
17. 17.True or false: the voltmeter is joined across a part. (a) True (b) False
18. 18.Which of these is measured in ohms (Ω)? (a) how much a part resists (b) power (c) voltage (d) energy used each second
19. 19.📏 How many watts (W) is 3.4 kW?
20. 20.📏 How many milliamperes (mA) is 2.23 A?
21. 21.True or false: how much a part resists is measured in ohms (Ω). (a) True (b) False
22. 22.📏 How many kilowatts (kW) is 300 W? =
23. 23.📏 In the water-pipe picture of a circuit, current is like … (a) the water pressure (b) the flow of water (c) the pipe colour (d) a narrow pipe
24. 24.📏 How many watts (W) is 4.1 kW?
25. 25.📏 How many watts (W) is 1.5 kW?
26. 26.📏 How many kilo-ohms (kΩ) is 3800 Ω? =
27. 27.📏 In the water-pipe picture of a circuit, resistance is like … (a) the flow of water (b) the water pressure (c) a narrow pipe (d) a bigger tank
28. 28.True or false: power is measured in watts (W). (a) False (b) True
29. 29.📏 How many watts (W) is 2.9 kW?
30. 30.True or false: resistance is measured in ohms (Ω). (a) False (b) True
31. 31.Which of these is measured in volts (V)? (a) the push of a cell (b) power (c) energy used each second (d) resistance
32. 32.📏 How many amperes (A) is 780 mA? =
33. 33.📏 How many watts (W) is 4.8 kW?
34. 34.True or false: the voltmeter measures current. (a) False (b) True
35. 35.Which of these is measured in amperes (A)? (a) current (b) the push of a cell (c) energy used each second (d) how much a part resists
36. 36.True or false: power is measured in ohms (Ω). (a) True (b) False
37. 37.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 10 (b) 100 (c) 1024 (d) 1000
38. 38.📏 How many kilo-ohms (kΩ) is 3400 Ω? =
39. 39.True or false: energy used each second is measured in amperes (A). (a) False (b) True
40. 40.📏 Which unit measures voltage? (a) watt (W) (b) ampere (A) (c) ohm (Ω) (d) volt (V)

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