Chapter 6: Problem 21

Which of the following electrical appliances works on the principle of the magnetic effect of electric current? (1) electric heater (2) electric motor (3) electric bell (4) Both (2) and (3)

Short Answer

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(1) Electric heater (2) Electric motor (3) Electric bell (4) Both (2) and (3) Answer: (4) Both (2) and (3)

Step by step solution

Understanding the Working Principle of Each Option

Here, we describe how each appliance works: (1) Electric heater - works on the principle of heating effect of electric current (2) Electric motor - works on the principle of magnetic effect of electric current (3) Electric bell - works on the principle of magnetic effect of electric current

Comparing the Working Principles with the Magnetic Effect of Electric Current

We established the working principles of each appliance in step 1. Now we compare them to the magnetic effect of electric current: (1) Electric heater - heating effect, not magnetic effect (2) Electric motor - magnetic effect, matches our requirement (3) Electric bell - magnetic effect, also matches our requirement

Determining the Correct Answer

From our analysis in steps 1 and 2, we found that both electric motor and electric bell work on the principle of the magnetic effect of electric current. Therefore, the correct answer is option (4), which states "Both (2) and (3)".

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Which of the following electrical appliances works on the principle of the magnetic effect of electric current? (1) electric heater (2) electric motor (3) electric bell (4) Both (2) and (3)

Short Answer

Step by step solution

Understanding the Working Principle of Each Option

Comparing the Working Principles with the Magnetic Effect of Electric Current

Determining the Correct Answer

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