Question 1

State the rule used to find the direction of magnetic field produced by a straight current-carrying conductor. Explain it briefly.

Accepted Answer

The rule used to find the direction of magnetic field produced by a straight current-carrying conductor is the Right-Hand Thumb Rule. It is also known as Maxwell's corkscrew rule. Statement: Imagine that you are holding a current-carrying straight conductor in your right hand such that the thumb poi

Question 2

What is a solenoid? Draw a schematic diagram of magnetic field lines around a current-carrying solenoid and state how it behaves like a bar magnet.

Accepted Answer

A solenoid is defined as a coil of many circular turns of insulated copper wire wrapped closely in the shape of a cylinder. Magnetic Field and Behavior: When an electric current is passed through the solenoid, it produces a magnetic field pattern that is very similar to the magnetic field of a bar m

Question 3

State Fleming's Left-Hand Rule. Explain its significance in the working of an electric motor.

Accepted Answer

Fleming's Left-Hand Rule states that if we stretch the thumb, forefinger, and middle finger of our left hand such that they are mutually perpendicular to each other, then the forefinger points in the direction of the magnetic field, the middle finger points in the direction of electric current, and

Question 4

Explain the phenomenon of electromagnetic induction discovered by Michael Faraday. What are the different ways to induce current in a coil?

Accepted Answer

Electromagnetic induction is the process by which a changing magnetic field in a closed circuit induces an electric current in that circuit. This groundbreaking phenomenon was discovered by Michael Faraday and Joseph Henry independently. Ways to induce current: 1. Moving a magnet towards or away fro

Question 5

What are the hazards associated with overloading and short-circuiting in domestic electric circuits? State the function of a fuse in preventing these hazards.

Accepted Answer

Domestic electric circuits carry electricity to various appliances, but faults can lead to severe hazards. Overloading: Overloading happens when too many high-power electrical appliances (such as a heater, refrigerator, and AC) are connected to a single socket or when the overall current drawn excee

Magnetic Effects of Electric Current