Question

Which labels identify the two carbon brushes?

विकल्प

• \[B_1\text{ and }B_2\]

• \[R_1\text{ and }R_2\]

• \[A\text{ and }R\]

• \[N\text{ and }S\]

Answer 1

The two carbon brushes are labelled \[B_1\] and \[B_2\]. They press against the slip rings and carry current to the external circuit.