Electricity and Magnetism MCQ question and answer with solution

61

X-rays region lies between

A) ultraviolet and visible region B) visible and infrared region C) gamma rays and ultraviolet region D) short radiowaves and long radiowaves

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Answer & Solution

Answer: Option C

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62

A simple circuit contains a 12 V battery and bulb having 24 Ω resistance. When turn on the switch, the ammeter connected to the circuit would read

A) 0.5A B) 2A C) 4A D) 5A

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Answer & Solution

Answer: Option A

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63

The . . . . . . . . is connected in parallel in an electric circuit.

A) voltmeter B) fuse C) galvanometer D) ammeter

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Answer & Solution

Answer: Option A

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64

A common fluorescent tube contains . . . . . . . .

A) Argon vapour B) Mercury vapour C) Sodium vapour D) Neon vapour

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Answer & Solution

Answer: Option B

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65

Five bulbs each of 100 watt capacity in a tunnel are illuminated continuously for twenty hours. The consumption of electricity will be

A) One unit B) Two units C) Ten units D) Twenty units

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Answer & Solution

Answer: Option C

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66

If 2 ampere current flow through a conductor having potential difference 4. Then resistance of conductor will be:

A) 1 ohm B) 8 ohm C) 2 ohm D) 0.5 ohm

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Answer & Solution

Answer: Option C

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67

The material used in electric heater is

A) Tungsten B) Nichrome C) Brass D) Steel

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Answer & Solution

Answer: Option B

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68

An electric lamp, whose resistance is 40 ohm, and an 8 ohm conductor were added in series with a 12V battery. What is the total resistance of the circuit?

A) 46 Ω B) 50 Ω C) 48 Ω D) 40 Ω

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Answer & Solution

Answer: Option C

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69

A filament of electric bulb carries 0.75A current in 1 minute. Find the amount of electric charge flowing through the electrical current.

A) 240 C B) 45 C C) 495 C D) 225 C

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Answer & Solution

Answer: Option B

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70

According to Ohm's law, which of the following statements is true?

A) The amount of electric current flowing in a wire is inversely proportional to the length of the wire B) The amount of electric current flowing in a wire is proportional to the voltage difference between the ends of the wire C) The amount of current flowing in a wire is inversely proportional to the voltage difference between the ends of the wire D) The amount of electric current flowing in a wire is proportional to the resistance of the wire

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Answer & Solution

Answer: Option B

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Electricity and Magnetism MCQ question and answer with solution | Physics Gk MCQs