Question

in electric motors and electric generators, which part is responsible for transferring current from the power source to the commutator or from the slip rings to where the electricity is needed?
armature
brush
axle
magnet

Explanation:

To solve this, we analyze the function of each part:

• Armature: The core with coils, not for current transfer.
• Brush: Transfers current between stationary and rotating parts (power source to commutator/slip rings to load).
• Axle: For mechanical rotation, not electrical transfer.
• Magnet: Provides magnetic field, not current transfer.

So the brush is responsible for current transfer.

Answer:

B. brush