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Q 01 / 25
An electric current flowing in a wire produces a magnetic field around it.
Q 02 / 25
Magnetic field lines around a current-carrying wire are straight lines.
Q 03 / 25
The direction of the magnetic field around a wire can be found by the Right-Hand Thumb Rule.
Q 04 / 25
Magnetic field strength decreases with distance from the conductor.
Q 05 / 25
A current-carrying circular loop produces a magnetic field with field lines concentrating at the center.
Q 06 / 25
The magnetic field inside a solenoid is non-uniform and weak.
Q 07 / 25
The direction of magnetic field in a solenoid can be determined by the Right-Hand Thumb Rule.
Q 08 / 25
The force on a current-carrying conductor in a magnetic field depends on the angle between current and magnetic field.
Q 09 / 25
Fleming’s Left-Hand Rule helps find the direction of magnetic field around a conductor.
Q 10 / 25
The force on a conductor is zero when current is parallel to the magnetic field.
Q 11 / 25
Circuit breakers are used in domestic electric circuits to prevent excess current flow.
Q 12 / 25
Earth wire is used to carry current back to the source in a domestic circuit.
Q 13 / 25
An electromagnet’s strength depends only on the current flowing through it.
Q 14 / 25
The magnetic effect of electric current was first discovered by Hans Christian Oersted.
Q 15 / 25
Magnetic field lines can intersect each other.
Q 16 / 25
The magnetic field of a bar magnet has closed and continuous field lines.
Q 17 / 25
The current direction in a conductor does not affect the direction of the magnetic field.
Q 18 / 25
Increasing the current through a solenoid decreases its magnetic field strength.
Q 19 / 25
The force experienced by a current-carrying conductor in a magnetic field is always perpendicular to both current and field directions.
Q 20 / 25
A solenoid can behave like a permanent magnet when current flows through it.
Q 21 / 25
A fuse melts to protect an electric circuit in case of excessive current flow.
Q 22 / 25
The magnetic field inside a current-carrying circular loop is zero.
Q 23 / 25
The earth wire protects users against electric shocks.
Q 24 / 25
The magnetic field produced by a current-carrying conductor depends only on the conductor’s length.
Q 25 / 25
Changing magnetic fields can induce current in a nearby coil (electromagnetic induction).
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