Question

Electric current produces :

• A. Heating effect
• B. Magnetic effect
• C. Both 1 \& 2
• D. None of the above

Hint:

Electric current has several important effects. The heating effect (Joule heating) is due to the resistance of the conductor, while the magnetic effect (Ørsted's discovery) is fundamental to electromagnetism and the operation of motors and generators.

Answer 1

The Correct Option is C

Step 1: Analyze the effects of electric current.
Electric current is the flow of electric charge. When current flows through a conductor, it produces several effects. Effect 1: Heating Effect of Electric Current (Joule Heating)
When electric current flows through a conductor, the moving electrons collide with the atoms or ions of the conductor. These collisions transfer kinetic energy to the atoms, causing them to vibrate more rapidly and leading to an increase in the temperature of the conductor. This phenomenon is known as the heating effect of electric current or Joule heating. Examples include electric heaters, incandescent light bulbs, and electric kettles. Effect 2: Magnetic Effect of Electric Current
Danish physicist Hans Christian Ørsted discovered in 1820 that an electric current produces a magnetic field around the conductor. This means that a current-carrying wire behaves like a magnet and can deflect a compass needle. This effect is the basis for electromagnets, electric motors, generators, and many other electrical devices. Step 3: Evaluate the options.
(1) Heating effect: This is a well-known effect of electric current (Joule heating).
(2) Magnetic effect: This is also a well-known effect of electric current (Ørsted's discovery).
(3) Both 1 \& 2: Since electric current produces both heating and magnetic effects, this option is correct.
(4) None of the above: This is incorrect because both effects are produced. Step 4: Conclude the answer.
Electric current produces both heating and magnetic effects. (3) Both 1 \& 2