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

Learn Electricity and Magnetism MCQ Questions and answers with easy and logical explanations in Physics Gk . Electricity and Magnetism MCQ question provides all type of technical mcq questions which is important for SSC-CGL, UPPSC, NDA, CDS and all govt examinations Page-5 section-3

Each section contains 100 MCQs on Electricity and Magnetism .
41
Which of these converts chemical energy into electrical energy?
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Answer & Solution
Answer: Option C
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42
Some resistors are connected in series in the circuit, the value of current through the circuit is?
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Answer & Solution
Answer: Option A
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43
An electric bulb of 100 W is used for 8 hours per day. The bulb will consume . . . . . . . . Unit energy in a week.
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Answer & Solution
Answer: Option B
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44
The property of electric current which is applicable in the fuse wire is
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Answer & Solution
Answer: Option C
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45
Which finger shows the direction of current in Fleming's left hand rule?
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Answer & Solution
Answer: Option B
Solution:
Fleming’s Left-Hand Rule is used to determine the direction of force, magnetic field, and current in a conductor carrying current in a magnetic field.

According to this rule, if you stretch the thumb, index finger, and middle finger of your left hand mutually perpendicular to each other:

• The Index finger represents the direction of the magnetic field (B).

• The Middle finger represents the direction of the current (I).

• The Thumb represents the direction of the force or motion (F) acting on the conductor.

Thus, in Fleming’s Left-Hand Rule, the middle finger shows the direction of current in the conductor.

Therefore, the correct answer is Option B: Middle finger.
46
Which of the following is arranged in order of decreasing conductivity?
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Answer & Solution
Answer: Option D
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47
The magnitude of current flowing between two end points of a conductor is proportional to the potential difference between them and is called as
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Answer: Option A
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48
Fluorescent tubes are fitted with a choke. The choke coil
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Answer & Solution
Answer: Option A
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49
When an electric current of 4A flows from a source though an electric heater, its potential differential is 60V. If the potential difference increases to 165V, what will be the current?
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Answer & Solution
Answer: Option D
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50
When the potential difference is 18V then the work is done moving a charge of 4C across two points is . . . . . . . .
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Answer & Solution
Answer: Option C
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