MYP Physics Topic 3.6 Electric and Magnetic Fields…

While a loudspeaker converts electrical signals into sound, a microphone uses a similar interaction between magnetic fields and current to convert __________ into electrical signals.

Why does placing a 'soft' iron core inside a solenoid significantly increase the strength of the resulting electromagnet?

When observing the magnetic field lines around a straight current-carrying wire, how does the spacing between the concentric circles change as the distance from the wire increases?

When using the right-hand grip rule for a straight wire, the direction of the __________ is represented by the direction in which the right thumb is pointing.

According to the textbook, adding an iron core to a solenoid can increase the magnetic field strength by approximately how much compared to an air-cored solenoid?

gravitational potential

The iron core increases the electrical resistance of the circuit

The iron core produces its own current to add to the wire's current

The iron core acts as a heat sink to keep the wire cool

The magnetic domains in the iron align with the solenoid's field

The spacing decreases

The spacing increases

The circles merge into a single line

The spacing remains constant

Magnetic field lines

Conventional current

MYP Physics 3.6 Electric and Magnetic Fields Questionbank

MYP Physics 3.6 Electric and Magnetic Fields Questionbank

MYP Physics 3.6 Electric and Magnetic Fields Questionbank

MYP Physics 3.6 Electric and Magnetic Fields Questionbank

MYP MYP Physics Topic 3.6 Electric and Magnetic Fields Questionbank