A Rod Lies Across Frictionless Rails in a Uniform Magnetic

question 33

Multiple Choice

A rod lies across frictionless rails in a uniform magnetic field B, as shown. The rod moves to the right with speed v. In order for the emf around the circuit to be zero, the magnitude of the magnetic field should:

• A) not change
• B) increase linearly with time
• C) decrease linearly with time
• D) increase quadratically with time
• E) decrease quadratically with time

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Definitions:

Single-gene Disorder

A genetic disorder caused by mutations in a single gene, affecting the organism's development or functioning.

Dominant

Assuming a position of power, influence, or greater importance in a relationship or situation.

Extra-chromosome Condition

A genetic condition characterized by having more than the usual number of chromosomes in the cells of an organism, often resulting in developmental differences.

Down Syndrome

A genetic disorder caused by the presence of an extra 21st chromosome, leading to developmental and intellectual delays.