Current Loops and Solenoids

The magnetic field inside a long solenoid is:

• Weak and non-uniform

• Weak and uniform

• Strong and uniform

• Zero

Magnetic field in a solenoid depends on:

• Temperature

• Length of wire

• Number of turns and current

• Width of coil

Solenoids act like:

• Resistors

• Permanent magnets

• Electromagnets

• Capacitors

The magnetic field outside a solenoid is:

• Strong

• Uniform

• Very weak

• Perpendicular

What increases the strength of the magnetic field in a solenoid?

• Decreasing current

• Decreasing turns

• Increasing current

• Using thinner wire