Magnetic Effects Of Electric Current

What is the effect of a magnetic field on a compass needle?

A compass needle aligns itself with the Earth's magnetic field, helping in navigation.

How do magnetic field lines represent the strength of a magnetic field?

The closer the lines are to each other, the stronger the magnetic field.

What did Hans Christian Oersted discover about electric current?

An electric current flowing through a wire creates a magnetic field around it.

What is the right-hand thumb rule used for?

To determine the direction of the magnetic field around a current-carrying wire.

Describe the magnetic field pattern around a straight wire.

Magnetic field lines form concentric circles around the wire.

What is a solenoid?

A solenoid is a coil of wire that creates a strong, uniform magnetic field when current flows through it.

What happens when a current-carrying conductor is placed in a magnetic field?

It experiences a force, which is fundamental for the operation of electric motors.

What does Fleming's left-hand rule help determine?

It helps find the direction of the force on a conductor in a magnetic field.

What are the three types of wires in home electrical systems?

Live, neutral, and earth wires.

What is the purpose of a fuse in a circuit?

Fuses protect circuits from overload by melting if the current exceeds its rating.

How are appliances connected in a domestic electric circuit?

Appliances are connected in parallel to ensure each receives full voltage.

At what voltage is electricity typically supplied in homes in India?

Electricity is typically supplied at 220V.