Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 593 · 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.True or false: the ammeter measures voltage. (a) True (b) False
2. 2.True or false: current is measured in watts (W). (a) True (b) False
3. 3.📏 Voltmeter or ammeter: which one measures current? (a) ammeter (b) voltmeter
4. 4.True or false: current is measured in amperes (A). (a) False (b) True
5. 5.📏 How many ohms (Ω) is 0.2 kΩ?
6. 6.📏 How many ohms (Ω) is 4.2 kΩ?
7. 7.📏 In the water-pipe picture of a circuit, resistance is like … (a) the water pressure (b) the flow of water (c) a bigger tank (d) a narrow pipe
8. 8.📏 Voltmeter or ammeter: which one measures voltage? (a) voltmeter (b) ammeter
9. 9.Which of these is measured in watts (W)? (a) how much a part resists (b) power (c) the push of a cell (d) resistance
10. 10.📏 Which unit measures current? (a) ohm (Ω) (b) watt (W) (c) ampere (A) (d) volt (V)
11. 11.True or false: power is measured in watts (W). (a) True (b) False
12. 12.True or false: voltage is measured in volts (V). (a) False (b) True
13. 13.📏 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
14. 14.📏 How many watts (W) is 4.1 kW?
15. 15.True or false: power is measured in ohms (Ω). (a) True (b) False
16. 16.Which of these is measured in ohms (Ω)? (a) resistance (b) the push of a cell (c) the flow of charge (d) voltage
17. 17.📏 How many milliamperes (mA) is 0.8 A?
18. 18.📏 Which unit measures energy used each second? (a) ampere (A) (b) volt (V) (c) watt (W) (d) ohm (Ω)
19. 19.📏 Which unit measures how much a part resists? (a) watt (W) (b) ampere (A) (c) volt (V) (d) ohm (Ω)
20. 20.📏 Voltmeter or ammeter: which one is joined in series? (a) ammeter (b) voltmeter
21. 21.📏 Which unit measures voltage? (a) ampere (A) (b) ohm (Ω) (c) watt (W) (d) volt (V)
22. 22.📏 How many amperes (A) is 2120 mA? =
23. 23.Which of these is measured in volts (V)? (a) voltage (b) current (c) energy used each second (d) the flow of charge
24. 24.📏 Which unit measures the flow of charge? (a) ohm (Ω) (b) ampere (A) (c) watt (W) (d) volt (V)
25. 25.Which of these is measured in amperes (A)? (a) the push of a cell (b) the flow of charge (c) energy used each second (d) power
26. 26.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 100 (b) 1000 (c) 10 (d) 1024
27. 27.Which of these is measured in ohms (Ω)? (a) power (b) how much a part resists (c) the flow of charge (d) energy used each second
28. 28.True or false: the ammeter measures current. (a) True (b) False
29. 29.📏 How many amperes (A) is 2570 mA? =
30. 30.Which of these is measured in watts (W)? (a) energy used each second (b) how much a part resists (c) voltage (d) the flow of charge
31. 31.True or false: how much a part resists is measured in watts (W). (a) True (b) False
32. 32.📏 How many kilowatts (kW) is 450 W? =
33. 33.True or false: the push of a cell is measured in amperes (A). (a) True (b) False
34. 34.📏 How many watts (W) is 1.6 kW?
35. 35.📏 How many kilo-ohms (kΩ) is 1600 Ω? =
36. 36.📏 How many milliamperes (mA) is 2.07 A?
37. 37.True or false: the voltmeter is joined in series. (a) False (b) True
38. 38.📏 How many milliamperes (mA) is 1.04 A?
39. 39.True or false: resistance is measured in ohms (Ω). (a) False (b) True
40. 40.True or false: the push of a cell is measured in volts (V). (a) False (b) True

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