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What will happen if an electric current is flowing through a cord and a magnet is brought near the cord?

The choices are


The resistance of the wire will decrease


It will exert a force on the voltage


It will exert a force on the electric current


The electric current will stop flowing

1 Answer

5 votes

Answer:

The magnet will exert a force on the electric current

Step-by-step explanation:

The electric current flowing through the cord will experience magnetic force due to presence of magnetic field created by the magnet brought near it.

The magnitude of the magnetic force experienced by this flowing current is given as;

F = qvB

where;

q is charge of electron (measured in coulomb's, C)

v is the speed of the flowing current (m/s)

B is the magnetic field strength (T)

Therefore, the magnet will exert a force on the electric current

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